Author: Lisa PARSONS

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REACH Compliance for Interior Fabrics: What Designers and Specifiers Need to Know

What REACH is: A mandatory chemical safety regulation, not a voluntary sustainability certification. Retained in UK law as UK REACH and enforced by the Health and Safety Executive. Every fabric sold into the UK must comply.
UK and EU: UK REACH and EU REACH restrict the same substances in practice. They are administered separately and their restricted lists can diverge over time, so confirm which market a declaration refers to.
What it covers: Restriction of substances of very high concern, including phthalate plasticisers, heavy metal stabilisers, certain azo dyes, and formaldehyde above defined thresholds.
What to request: A specific UK REACH compliance declaration confirming the absence of restricted substances, not a general assurance.

REACH is the most universally applicable compliance point in the interior fabric supply chain and the one most commonly assumed rather than confirmed. It applies to every fabric sold into the UK regardless of any additional sustainability claim made about it. Because it is a legal requirement rather than a certification a supplier chooses to pursue, designers often assume compliance without requesting the documentation that evidences it. This guide explains what REACH restricts, which fabrics carry the highest compliance risk, and what to ask a supplier before specifying.

For voluntary sustainability certifications that sit alongside REACH, see our fabric sustainability certifications guide. For the environmental profile of coated fabrics specifically, see our faux leather types compared guide.

What REACH Is

REACH stands for Registration, Evaluation, Authorisation and Restriction of Chemicals. It originated as an EU regulation and, following EU exit, was retained in UK law as UK REACH, enforced by the Health and Safety Executive. UK REACH and EU REACH currently restrict the same substances at the same thresholds in practice, so a fabric compliant with one is generally compliant with the other. The two frameworks are administered separately, however, and their restricted substance lists can diverge over time. For a UK project, the operative requirement is UK REACH. Where a supplier’s declaration references EU REACH, confirm it also holds for the UK market.

The regulation places the burden of proof on manufacturers and importers to demonstrate that the substances used in their products are safe for their intended use. For textiles and coated fabrics, this means the fabric must not contain restricted substances above defined concentration limits. Compliance is mandatory. A fabric that does not comply cannot be legally sold into the UK market.

This is the critical distinction between REACH and the voluntary sustainability certifications a fabric may also hold. GOTS, Oeko-Tex, and the welfare standards are certifications a supplier elects to pursue and pay for. REACH is a legal baseline every product must meet. A fabric holding no sustainability certifications at all must still comply with REACH.

What REACH Restricts in Textiles

REACH restricts substances of very high concern through Annex XVII, which lists specific substances and the concentration limits permitted in defined product categories. The restrictions most relevant to interior fabrics are as follows.

Phthalate plasticisers. Phthalates are used to make PVC and some other polymers flexible. Several are restricted as substances of very high concern because they are endocrine disruptors. Since November 2020, DEHP, DBP, DIBP, and BBP have been restricted to 1,000 mg per kilogram, individually or in combination, in consumer textiles and related articles. This restriction is the single most significant REACH consideration for faux leather and other coated fabrics.

Heavy metal stabilisers. Older PVC formulations used lead and cadmium compounds as heat stabilisers. Both are restricted under REACH. Current-generation PVC uses calcium-zinc or other non-heavy-metal stabiliser systems.

Azo dyes. Certain azo dyes release aromatic amines that are carcinogenic. These are restricted under REACH. The restriction applies to dyes used on any fabric, natural or synthetic, that comes into contact with skin.

Formaldehyde. Used in some easy-care and crease-resist finishes and in certain resin treatments. Restricted above defined limits.

Perfluorinated compounds. PFOA, PFOS, and related long-chain fluorochemicals used in some water-repellent and stain-resist finishes are restricted or subject to phase-out. This affects fabrics carrying older-generation fluorocarbon stain treatments.

Which Fabrics Carry the Highest Compliance Risk

REACH applies to all fabrics, but the practical compliance risk is concentrated in specific categories.

Coated and synthetic fabrics carry the highest risk because their polymer chemistry historically depended on plasticisers and stabilisers now restricted. PVC faux leather is the clearest case: the plasticisers that give PVC its flexibility were, until recent years, predominantly the phthalates now restricted under Annex XVII. High-specification PVC faux leather now uses phthalate-free plasticiser formulations as standard, but lower-cost imported material may not. This is the category where requesting a specific compliance declaration matters most.

Fabrics carrying stain-resist or water-repellent finishes carry risk from the fluorochemical restrictions. A fabric treated with an older-generation fluorocarbon finish may contain restricted perfluorinated compounds.

Dyed fabrics of any fibre carry azo dye risk if the dye source is not controlled. This is more likely to be a concern with fabrics dyed in supply chains without documented chemical management than with fabrics from established European mills.

Natural fibre fabrics without applied finishes carry the lowest inherent risk, but REACH remains relevant to any dye, finish, or flame-retardant treatment applied during processing.

What to Request From a Supplier

A general statement that a fabric is REACH compliant is of limited value because compliance is a legal requirement the fabric must meet regardless. The useful documentation is more specific.

Request a UK REACH compliance declaration that identifies the specific fabric or range and confirms the absence of restricted substances above the Annex XVII thresholds. For coated fabrics, this declaration should specifically confirm phthalate content below the 1,000 mg per kilogram limit, or confirm a phthalate-free formulation.

For projects with documented chemical safety requirements, request confirmation of whether the fabric has been tested by a third-party laboratory using gas chromatography or equivalent analytical methods, and whether batch-specific test reports are available. Established suppliers of contract-grade coated fabric can generally provide this.

Where a fabric also holds Oeko-Tex Standard 100 certification, that certification independently confirms the finished fabric tests below defined thresholds for many of the same substances REACH restricts, providing a second line of assurance. The two are complementary: REACH is the mandatory legal baseline, Oeko-Tex is a voluntary product test that overlaps with it.

REACH and Sustainability Are Not the Same Thing

REACH compliance is sometimes presented as a sustainability credential. It is more accurately described as a chemical safety and human health baseline. A fabric can be fully REACH compliant while having a significant environmental footprint in manufacture, and REACH says nothing about animal welfare, recycled content, or end-of-life recyclability.

Where REACH does connect to sustainability is in the specific area of chemical management. A fabric confirmed free of restricted phthalates, heavy metals, and azo dyes is safer for the people who manufacture it, install it, and live with it. That is a meaningful dimension of responsible specification, but it is one dimension rather than a complete claim.

Quick answers

Is REACH a certification?
No. REACH is a mandatory chemical safety regulation under UK and EU law, not a voluntary certification. Every fabric sold into the UK must comply with REACH regardless of any sustainability certifications it holds or does not hold. A supplier cannot choose whether to comply; compliance is a legal requirement for placing the product on the market. This distinguishes REACH from certifications such as GOTS or Oeko-Tex, which suppliers elect to pursue.

What does REACH restrict in faux leather?
The most significant REACH restriction for faux leather concerns phthalate plasticisers. DEHP, DBP, DIBP, and BBP have been restricted to 1,000 mg per kilogram, individually or in combination, in consumer textiles since November 2020. These plasticisers were historically used to make PVC flexible. High-specification PVC faux leather now commonly uses phthalate-free plasticiser formulations. REACH also restricts heavy metal stabilisers, certain azo dyes, and formaldehyde above defined limits.

How do I confirm a fabric is REACH compliant?
Request a UK REACH compliance declaration that identifies the specific fabric and confirms the absence of restricted substances above the Annex XVII thresholds, rather than accepting a general assurance. For coated fabrics, the declaration should confirm phthalate content below the restricted limit or a phthalate-free formulation. For projects with documented requirements, ask whether third-party laboratory testing and batch-specific reports are available. A concurrent Oeko-Tex Standard 100 certificate provides additional independent assurance.

Does REACH apply to natural fibre fabrics?
Yes. REACH applies to all fabrics sold into the UK regardless of fibre type. Natural fibre fabrics without applied finishes carry the lowest inherent compliance risk, but REACH remains relevant to any dye, finish, or flame-retardant treatment applied during processing. Azo dye restrictions apply to dyed fabrics of any fibre, and formaldehyde restrictions apply to any resin or easy-care finish.

Is a REACH compliant fabric sustainable?
Not necessarily. REACH is a chemical safety and human health baseline, not a comprehensive sustainability measure. A fabric can be fully REACH compliant while having a significant environmental footprint in manufacture, and REACH does not address animal welfare, recycled content, or recyclability. Where REACH connects to sustainability is in chemical management: a fabric confirmed free of restricted substances is safer for the people who make, install, and live with it.

For voluntary sustainability certifications including GOTS, Oeko-Tex, and welfare standards, see our fabric sustainability certifications guide. For the environmental and chemical profile of coated fabrics, see our faux leather types compared guide.

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Cold Crack Temperature Testing for Coated Fabrics: A Specifier’s Guide

What it measures: The lowest temperature at which the surface coating of a faux leather or coated fabric cracks when flexed.
UK standard: BS EN ISO 17233, the UK-adopted form of the international ISO 17233:2017 method.
Typical performance: Standard PVC begins to stiffen around 0 degrees Celsius and may crack below minus 5 degrees. Cold-resistant formulations can be specified to withstand minus 20 degrees or lower.
When it matters: Marine exterior use, outdoor terrace furniture, and any cold-climate installation.

Cold crack temperature is a performance property that determines whether a coated fabric will survive flexing in cold conditions without its surface fracturing. It is rarely discussed in standard upholstery specification because most interior fabric is used in heated environments where it is not relevant. For coated fabrics used in exterior, marine, or cold-climate applications, it is one of the most important specification questions and one of the least frequently asked. This guide explains what the test measures, what the results mean, and when to request the data.

For the broader comparison of coated fabric types, see our faux leather types compared guide. For exterior and semi-outdoor specification, see our outdoor terrace fabric specification guide.

Why Coated Fabrics Crack in Cold Conditions

PVC is a rigid polymer in its raw state. To make it flexible enough for use as a faux leather, plasticisers are added. These are compounds that sit between the polymer chains and allow them to move relative to one another, giving the material its flexibility and soft handle. The behaviour of these plasticisers at low temperatures determines the cold performance of the finished fabric.

As temperature falls, the polymer approaches its glass transition point, the temperature at which it changes from a flexible state to a hard, brittle one. Below this point, the material no longer flexes; it fractures. If a coated fabric is flexed or stressed while in this brittle state, such as when someone sits on an exterior cushion in cold weather, the surface coating cracks. These cracks deepen over time, expose the backing fabric, and lead eventually to complete surface failure.

The glass transition point is not fixed. It depends on the plasticiser chemistry used in the specific formulation. Standard general-purpose plasticisers give a relatively high transition point, meaning the material becomes brittle at temperatures only slightly below freezing. Specialist low-temperature plasticisers give a much lower transition point, keeping the material flexible well below minus 20 degrees Celsius.

The Test: BS EN ISO 17233

The cold crack temperature of a coated fabric is determined by BS EN ISO 17233, the UK-adopted form of the international ISO 17233:2017 method. It specifies a procedure for determining the temperature at which the surface coating of a flexible coated material cracks.

The method conditions test pieces at a series of decreasing temperatures. It begins at 0 degrees Celsius and steps down in defined increments, minus 5, minus 10, minus 15, minus 20, minus 25, and minus 30 degrees Celsius, using fresh test pieces at each stage. At each temperature the conditioned test pieces are flexed and examined for cracking. The cold crack temperature is recorded as the temperature at which the surface coating of at least two test pieces cracks.

The result is a single temperature value. A fabric with a cold crack temperature of minus 20 degrees has demonstrated that its coating remains intact when flexed at temperatures down to that point. A fabric with a cold crack temperature of minus 5 degrees will crack if flexed at any temperature below that.

US Equivalent Test Methods

Two ASTM methods are used in the United States for equivalent cold performance testing and may appear on data sheets for material of US origin. ASTM D2136 is a low-temperature bend test for coated fabrics, a pass or fail procedure at a specified temperature. ASTM D2137 determines the brittleness point of flexible polymers and coated fabrics. Where a data sheet cites an ASTM result rather than a BS EN ISO figure, confirm the test temperature and criteria, as the methods are not directly interchangeable with the BS EN ISO 17233 stepped procedure.

What Results to Specify by Application

The cold crack temperature required depends on the lowest temperature the fabric will experience in service, including overnight and seasonal extremes, not the average temperature.

Interior heated environments. Cold crack temperature is not a relevant specification criterion. Any standard coated fabric performs adequately in a permanently heated interior.

Covered exterior and semi-outdoor. Hotel terraces, covered courtyards, and similar spaces that are unheated but sheltered experience temperatures down to local winter minimums. In the UK this means specifying for temperatures that can fall several degrees below freezing overnight in winter. A cold crack temperature of minus 20 degrees provides a safe margin for UK exterior use.

Marine exterior. Deck seating and exterior cushions on vessels experience both low temperatures and constant flexing from use and from the movement of the vessel. Marine exterior applications should specify a cold-resistant formulation with a confirmed cold crack temperature well below the coldest expected operating condition.

Cold-climate installations. Projects in continental or northern climates where winter temperatures fall well below UK minimums require correspondingly lower cold crack temperatures. Confirm the coldest expected temperature at the installation location and specify a margin below it.

Silicone Leather and Cold Performance

Silicone leather does not use plasticisers. Its flexibility is a property of the silicone polymer itself rather than of added compounds. This means it does not have the plasticiser-driven glass transition behaviour that causes PVC to crack in cold conditions. Silicone leather remains flexible across a much wider temperature range than PVC and is the more reliable specification for applications combining cold exposure with constant flexing. This is one of the specific properties that justifies its price premium in exterior and marine applications. For the full comparison, see our faux leather types compared guide.

What to Ask the Supplier

For any coated fabric being specified for exterior, marine, or cold-climate use, request the cold crack temperature determined by BS EN ISO 17233, expressed as a specific temperature in degrees Celsius.

Confirm whether the figure applies to the specific colourway and finish being specified, as formulation can vary across a range.

Where the fabric is of US origin and the data sheet cites an ASTM result, request the test temperature and pass criteria so the result can be interpreted against the UK application requirement.

For marine and exterior applications, confirm the cold crack figure alongside the UV and light fastness data, since these applications combine cold exposure with sustained sunlight and both must be satisfied.

Quick answers

What is cold crack temperature for faux leather?
Cold crack temperature is the lowest temperature at which the surface coating of a faux leather cracks when flexed. It is determined by BS EN ISO 17233, the UK-adopted form of the international ISO 17233:2017 method, which conditions test pieces at decreasing temperatures from 0 degrees Celsius down to minus 30 and records the temperature at which the coating fractures. Standard PVC typically cracks below minus 5 degrees; cold-resistant formulations can withstand minus 20 degrees or lower.

Why does PVC faux leather crack in cold weather?
PVC is made flexible by adding plasticisers. As temperature falls, the polymer approaches its glass transition point, below which it becomes hard and brittle rather than flexible. If flexed in this brittle state, such as when someone sits on an exterior cushion in cold weather, the surface coating cracks. The transition temperature depends on the plasticiser chemistry: standard formulations become brittle just below freezing, while specialist low-temperature formulations remain flexible below minus 20 degrees.

What cold crack temperature should I specify for outdoor use?
Specify for the lowest temperature the fabric will experience in service, including overnight and seasonal extremes, not the average. For UK covered exterior and semi-outdoor use, a cold crack temperature of minus 20 degrees Celsius provides a safe margin against winter overnight lows. Marine exterior and continental cold-climate installations require correspondingly lower figures. Confirm the coldest expected temperature at the installation location and specify a margin below it.

Does silicone leather crack in the cold?
Silicone leather does not use plasticisers, so it does not have the glass transition behaviour that causes PVC to crack in cold conditions. Its flexibility is a property of the silicone polymer itself and remains stable across a much wider temperature range than PVC. This makes silicone leather the more reliable specification for applications combining cold exposure with constant flexing, such as marine deck seating and exterior furniture, and is one of the properties that justifies its price premium.

Is cold crack testing the same as the ASTM cold bend test?
They measure the same property but are not directly interchangeable. BS EN ISO 17233 is the UK and international method, using a stepped procedure that records the temperature at which the coating cracks. ASTM D2136, used in the United States, is a pass or fail bend test at a single specified temperature, and ASTM D2137 determines a brittleness point. Where a data sheet of US origin cites an ASTM result, confirm the test temperature and criteria so it can be interpreted against the UK application requirement.

For the full comparison of PVC, PU, and silicone leather including durability and fire certification, see our faux leather types compared guide. For exterior and semi-outdoor fabric specification, see our outdoor terrace fabric specification guide.

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Faux Leather Sustainability: A Specifier’s Guide to Chemical Safety, Durability and Certification

The honest position: Faux leather sustainability is best assessed through chemical compliance, durability, and certification rather than a single environmental claim.
Chemical baseline: UK REACH compliance is mandatory and restricts phthalate plasticisers, heavy metal stabilisers, and azo dyes.
Durability as environmental performance: A coated fabric achieving 200,000 Martindale rubs and a service life measured in decades requires replacement far less frequently than shorter-lived alternatives.
Type matters: Silicone leather leads on most environmental measures, PU sits between, and PVC is the most durable and readily certified.

Sustainability in faux leather is frequently reduced to a single word on a specification sheet, which is of little use to a designer who has to defend a material choice to a client or a developer. A more useful approach is to assess the material against the specific dimensions that can be documented and verified: chemical compliance, durability and service life, and the certifications the material holds. This guide sets out how to evaluate faux leather on those terms.

For chemical compliance in detail, see our faux leather types compared guide and our fabric sustainability certifications guide.

Chemical Compliance: The Documented Baseline

The most verifiable dimension of faux leather sustainability is chemical safety, governed in the UK by UK REACH. This is a mandatory regulation rather than a voluntary certification, which means every faux leather sold into the UK must meet it. UK REACH restricts substances of very high concern, and several of these historically featured in coated fabric manufacture.

Phthalate plasticisers are the most significant. Since November 2020, DEHP, DBP, DIBP, and BBP have been restricted to 1,000 mg per kilogram in consumer textiles under REACH. These compounds were used to make PVC flexible. High-specification PVC faux leather now uses phthalate-free plasticiser formulations as standard. Requesting confirmation of phthalate-free formulation is the single most useful chemical safety question a specifier can ask.

Heavy metal stabilisers, historically lead and cadmium compounds in PVC, are also restricted. Current-generation material uses calcium-zinc stabiliser systems. Azo dyes releasing carcinogenic amines are restricted across all fibre types. A faux leather confirmed compliant on these three points is safer for the people who manufacture it, install it, and use it, which is a substantive and defensible dimension of responsible specification.

Where a material also holds Oeko-Tex Standard 100 certification, that provides independent third-party confirmation that the finished product tests below defined thresholds for many of the same substances, complementing the mandatory REACH baseline.

Durability as Environmental Performance

The most significant and least discussed sustainability factor in faux leather is service life. A material that lasts is a material that does not need replacing, and the environmental cost of a replacement cycle, new manufacture, transport, installation, and disposal of the old material, is substantial.

High-specification PVC faux leather achieving in excess of 200,000 Martindale rubs has a service life in contract use measured in decades rather than years. A lower-grade coated fabric achieving 30,000 rubs in the same environment may require replacement several times over the same period. The cumulative material and manufacturing impact of the durable specification is a fraction of the repeated-replacement alternative, even before the disruption and cost of each replacement cycle is considered.

This reframes the durability data on a specification sheet as environmental data. The Martindale rub count, the hydrolysis resistance of PU, the UV stability that prevents surface degradation, and the cold crack resistance that prevents cracking in exterior use are all measures of how long the material will last before it must be replaced. Longevity is the environmental argument that coated fabric can make most credibly.

How the Three Types Compare on Sustainability

Silicone leather leads on most environmental measures. It uses no plasticisers, requires no fire-retardant additives to achieve inherent flame resistance, produces low VOC emissions in manufacture, and does not break down into microplastics in the way that some coated materials can. It is derived from silica, an abundant mineral. Its environmental credentials are defensible to a degree the other types cannot match, and its exceptional durability and UV stability give it the longest service life in demanding applications. The constraint is cost.

PU leather occupies a middle position. It does not contain chlorine, and water-based polyurethane systems significantly reduce VOC emissions in manufacture compared with solvent-based systems. It is generally the more environmentally benign choice between PVC and PU. Its limitation is durability: standard PU is susceptible to hydrolysis and has a shorter service life than PVC or silicone in humid or heavy-use conditions, which works against the longevity argument.

PVC leather is the most durable and most readily certified for fire performance. Its environmental case rests primarily on that durability and on chemical compliance: current-generation PVC using phthalate-free plasticisers and non-heavy-metal stabilisers is a substantially different material from older formulations. Its exceptional abrasion resistance and long service life are the strongest components of its sustainability position.

What to Request for a Sustainability-Led Specification

Where a project brief requires documented sustainability credentials for faux leather, define the specific requirements rather than accepting a general claim.

Request a UK REACH compliance declaration confirming phthalate-free formulation and the absence of restricted heavy metal stabilisers and azo dyes.

Request Oeko-Tex Standard 100 certification where available, specifying the class appropriate to the application.

Request the Martindale rub count and, for exterior or marine applications, the UV light fastness and cold crack temperature, and present these as service-life and therefore sustainability data.

Where recycled content is a requirement, request confirmation of recycled backing content and any GRS certification covering it, noting that GRS certifies recycled content origin rather than overall environmental performance.

For projects where silicone leather’s environmental profile justifies its cost, specify it directly for the applications where its properties are genuinely required rather than across the whole scheme.

Quick answers

Is faux leather environmentally friendly?
Faux leather sustainability is best assessed through specific documented dimensions rather than a single claim: chemical compliance under UK REACH, durability and service life, and the certifications the material holds. A durable, REACH-compliant, phthalate-free coated fabric with a long service life has a defensible sustainability position. Silicone leather leads on most environmental measures, PU sits in the middle, and PVC’s case rests on its exceptional durability and current-generation chemical compliance.

Is PVC faux leather safe?
High-specification PVC faux leather compliant with UK REACH is manufactured without the restricted phthalate plasticisers and heavy metal stabilisers used in older formulations. Current-generation material uses phthalate-free plasticisers and calcium-zinc stabiliser systems. Request a REACH compliance declaration confirming phthalate-free formulation, and an Oeko-Tex Standard 100 certificate where available for independent confirmation that the finished product tests below defined substance thresholds.

How does durability affect faux leather sustainability?
Durability is the most significant sustainability factor in faux leather. A material achieving 200,000 Martindale rubs and a service life measured in decades requires replacement far less frequently than a lower-grade material achieving 30,000 rubs in the same environment. The environmental cost of each replacement cycle, new manufacture, transport, installation, and disposal, is substantial, so the durable specification has a fraction of the cumulative impact. Durability data is environmental data.

Which faux leather is most sustainable?
Silicone leather leads on most environmental measures. It uses no plasticisers, needs no fire-retardant additives to achieve inherent flame resistance, produces low VOC emissions, and does not break down into microplastics. It also has the longest service life under UV and temperature extremes. Its constraint is cost. PU is the more environmentally benign choice between PVC and PU, while PVC’s case rests on its durability and current-generation chemical compliance.

What certifications should I request for sustainable faux leather?
Request a UK REACH compliance declaration confirming phthalate-free formulation and the absence of restricted heavy metal stabilisers and azo dyes. Request Oeko-Tex Standard 100 certification at the class appropriate to the application. Request the Martindale rub count and, for exterior or marine use, UV light fastness and cold crack temperature, which function as service-life and therefore sustainability data. Where recycled content is required, request GRS certification covering the recycled backing.

For the full technical comparison of PVC, PU, and silicone leather, see our faux leather types compared guide. For sustainability certifications across all fibre types, see our fabric sustainability certifications guide. For chemical compliance in detail, see our REACH compliance guide.

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Cashmere and Mohair Welfare Certifications: A Guide for Interior Designers

Mohair: The Responsible Mohair Standard (RMS), developed by Textile Exchange, certifies Angora goat welfare through the full supply chain.
Cashmere: The Good Cashmere Standard (GCS) and the Sustainable Fibre Alliance (SFA) Sustainable Cashmere Standard certify cashmere goat welfare and grassland management.
These are international standards, not UK-specific schemes. They apply to fibre sourced from the principal producing regions and are recognised globally.
What they cover: Fibre-level animal welfare and, in the cashmere standards, environmental land management. None covers dyeing or finishing.

Animal welfare is an increasingly common requirement on project briefs for natural-fibre fabrics, and cashmere and mohair are the two luxury fibres where it is most frequently raised. The certifications that address welfare in these fibres are distinct from the sustainability and chemical standards covered elsewhere, and they cover the fibre at source rather than the finished fabric. This guide explains what each standard certifies, what it does not, and how to specify and verify welfare credentials on a project.

For the broader set of sustainability certifications, see our fabric sustainability certifications guide. For cashmere throw specification, see our cashmere sofa throws and bed throws.

Why Welfare Certification Applies to These Fibres

Cashmere and mohair are both goat fibres. Cashmere comes from the undercoat of the cashmere goat, produced principally in Mongolia and China. Mohair comes from the Angora goat, produced principally in South Africa. In both cases the fibre is harvested from living animals, which places animal husbandry, handling, and welfare at the centre of any responsible-sourcing question.

The welfare concerns are distinct from the mulesing question that dominates wool sourcing. Mulesing is a sheep-specific practice and does not apply to goats. The welfare framework for cashmere and mohair instead centres on the Five Freedoms: freedom from hunger and thirst, from discomfort, from pain, injury and disease, from fear and distress, and freedom to express normal behaviour. The certifications assess husbandry and handling against this framework.

For cashmere specifically, there is an additional environmental dimension. Cashmere goats graze grassland, and overstocking has been linked to degradation and desertification of grazing land in the principal producing regions. The cashmere standards therefore address grassland management alongside animal welfare.

The Responsible Mohair Standard

The Responsible Mohair Standard (RMS) is a voluntary standard developed by Textile Exchange, the international non-profit that also administers the Responsible Wool Standard and the Responsible Alpaca Standard. It is an international standard rather than a UK or South African national scheme.

RMS certifies the full supply chain, from the farm through to the final seller in the last business-to-business transaction. Every stage must be certified and independently audited. The farm-level criteria assess Angora goat welfare against the Five Freedoms and prohibit practices inconsistent with them. Land management criteria address the environmental impact of farming.

The chain of custody requirement is significant. For a product to carry the RMS label, the mohair content must be 100% certified, and the certified fibre must be traceable through every processing stage. This is what distinguishes a certified claim from a general assurance: RMS certification means the specific supply chain has been audited end to end, not that the fibre originates from a region where welfare standards are generally observed.

The Cashmere Standards: GCS and SFA

Two parallel standards address cashmere welfare and sustainability.

The Good Cashmere Standard (GCS) was developed by the Aid by Trade Foundation. It certifies cashmere goat welfare, environmental land management, and the social conditions and livelihoods of the herders who produce the fibre. It operates principally in the producing regions of Mongolia and China.

The Sustainable Fibre Alliance (SFA) operates the Sustainable Cashmere Standard, addressing the same three areas of animal welfare, environmental management, and herder livelihoods, with a particular emphasis on preventing overgrazing and the grassland degradation associated with it. The SFA works extensively in Mongolia, the source of a large share of the world’s cashmere.

Both standards address the combination of animal welfare and grassland sustainability that is specific to cashmere production. For a project requiring documented cashmere welfare credentials, either standard provides a recognised basis. The choice between them is usually determined by which the supplier’s source holds rather than by a material difference in what they certify.

What These Standards Do Not Cover

All three standards certify the fibre at source and through the supply chain to the point of sale. None of them covers the dyeing, finishing, or chemical processing of the finished fabric. A cashmere or mohair fabric carrying a welfare certification has documented welfare at fibre level, but the certification says nothing about the chemical management of the dyehouse or the environmental standards of the finishing process.

For a fabric requiring both welfare assurance and processing assurance, a welfare standard at fibre level must be combined with a processing certification such as GOTS or a product test such as Oeko-Tex Standard 100. The welfare standard and the processing standard answer different questions and neither substitutes for the other.

This is the same structural point that applies across textile certification generally: each standard certifies one part of the chain, and a complete sustainability claim requires understanding which parts are covered and which are not. For the full picture, see our fabric sustainability certifications guide.

How to Specify and Verify Welfare Credentials

Where a project brief requires animal welfare credentials for cashmere or mohair, specify the standard by name rather than using an unqualified term such as ethically sourced, which is not verifiable.

For mohair, specify RMS certification and request confirmation that the fibre content is 100% RMS certified, which is the requirement for the label to apply.

For cashmere, specify either the Good Cashmere Standard or the SFA Sustainable Cashmere Standard, and request confirmation of which the source holds.

Ask the supplier to confirm the certification at the point of specification, before the order is placed. A supplier able to provide welfare certification will hold the documentation; a general assurance that the fibre is responsibly sourced without reference to a named standard is not verifiable and should not be presented to a client as a welfare credential.

Where the supplier cannot provide a named certification, the appropriate approach is to confirm the country of origin and the farming standards directly, and to represent this accurately to the client as sourcing information rather than as certified welfare.

Quick answers

What is the Responsible Mohair Standard?
The Responsible Mohair Standard (RMS) is a voluntary international standard developed by Textile Exchange that certifies Angora goat welfare and land management from the farm through to the final business-to-business seller, with every stage independently audited. It assesses welfare against the Five Freedoms framework. For a product to carry the RMS label, the mohair content must be 100% certified and traceable through every processing stage, which distinguishes a certified claim from a general assurance about a region’s standards.

What certifications cover cashmere goat welfare?
Two international standards certify cashmere goat welfare: the Good Cashmere Standard (GCS), developed by the Aid by Trade Foundation, and the Sustainable Fibre Alliance (SFA) Sustainable Cashmere Standard. Both address animal welfare, environmental land management, and herder livelihoods in the principal producing regions of Mongolia and China, with the SFA placing particular emphasis on preventing overgrazing. Neither covers the dyeing or finishing of the finished fabric, which requires separate certification.

Does mulesing apply to cashmere or mohair?
No. Mulesing is a sheep-specific practice and does not apply to goats. Cashmere comes from the cashmere goat and mohair from the Angora goat, so the mulesing question that dominates wool sourcing is not relevant to these fibres. Their welfare framework centres instead on the Five Freedoms, and for cashmere on grassland management, addressed by the Good Cashmere Standard, the SFA Sustainable Cashmere Standard, and the Responsible Mohair Standard respectively.

Are these welfare standards UK schemes?
No. The Responsible Mohair Standard, the Good Cashmere Standard, and the SFA Sustainable Cashmere Standard are all international standards, not UK-specific schemes. They apply to fibre sourced from the principal producing regions, mohair from South Africa and cashmere from Mongolia and China, and are recognised globally. This means the same certification applies whether the finished fabric is specified for a UK project or one elsewhere.

How do I verify a welfare claim for cashmere or mohair?
Specify the standard by name rather than using an unqualified term such as ethically sourced. For mohair, specify RMS certification and request confirmation of 100% certified content. For cashmere, specify the Good Cashmere Standard or the SFA Sustainable Cashmere Standard and confirm which the source holds. Ask the supplier to provide the certification documentation at the point of specification. Where no named certification is available, confirm country of origin and farming standards directly and represent that accurately as sourcing information rather than certified welfare.

For the full set of sustainability and chemical certifications across all fibres, see our fabric sustainability certifications guide. For cashmere throw specification and bespoke options, see our pure cashmere throws. For mohair velvet upholstery, see our mohair velvet page.

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Fabric for Poolside, Spa and Chlorine-Exposed Environments: A Specifier’s Guide

The core problem: Chlorine is a bleaching agent. It attacks textile dyes and degrades coatings through a different mechanism than the salt and UV exposure of marine environments.
Distinct from marine: Salt air and UV are the marine concerns. Chlorine adds chemical bleaching and coating degradation on top of these where a pool or spa is present.
Where it applies: Hotel spa surrounds, poolside cabanas and loungers, yacht pool areas, and indoor pool and wellness environments.
What to specify: Solution-dyed fibres and chlorine-resistant coatings, with dye and coating performance confirmed for chlorine exposure specifically.

Fabric specified for poolside and spa environments faces a chemical challenge that general outdoor and marine specification does not address. Chlorine, the standard disinfectant in pools and spas, is a bleaching agent that attacks textile dyes and degrades certain coatings. A fabric selected correctly for UV and salt resistance can still fail in a chlorine environment if its dye and coating chemistry are not suited to that specific exposure. This guide explains the mechanism, distinguishes it from marine exposure, and sets out what to specify.

For fully exposed outdoor specification, see our outdoor terrace fabric specification guide. For marine environments, see our IMO marine fire standards guide.

Why Chlorine Is a Distinct Problem

Chlorine in pool and spa water exists to oxidise and destroy organic contaminants. That same oxidising action does not distinguish between contaminants and textile dyes. When chlorinated water contacts a fabric, whether through direct splashing, damp swimwear on a lounger, or the humid chlorinated atmosphere of an indoor pool hall, the chlorine attacks the dye molecules and breaks down the chemical bonds that give them their colour. The visible result is fading, colour change, and eventually bleaching.

This is a chemical bleaching mechanism, distinct from the photochemical fading caused by UV light. A fabric can have excellent UV light fastness and still fade rapidly in a chlorine environment, because the two forms of degradation attack the dye by different routes. Light fastness data, measured by the Blue Wool Scale under UV exposure, does not predict chlorine resistance.

Chlorine also affects coatings. The oxidising action can degrade the polymer surface of some coated fabrics over time, causing embrittlement, discolouration, or breakdown of the surface finish. This is additional to and separate from the dye bleaching.

How This Differs From Marine Exposure

Marine and poolside environments are often grouped together as wet exterior applications, but their chemistry is different and the distinction matters for specification.

The marine concerns are salt and UV. Salt air and salt water are corrosive and can leave deposits, and marine exterior fabric faces sustained and often intense UV exposure. The standard marine specification response is solution-dyed acrylic or a UV-stable coated fabric, selected for salt resistance and high light fastness. For the fire dimension of marine specification, see our IMO marine fire standards guide.

The poolside environment adds chlorine on top of the UV exposure that any exterior application faces. A yacht with a pool combines all three: salt from the marine environment, UV from the exposed position, and chlorine from the pool. A hotel spa surround may have little salt exposure but high chlorine and humidity. The specification must address the specific combination present, and chlorine resistance is the dimension most often overlooked because it is not part of the standard marine or outdoor brief.

Where Chlorine Specification Applies

Hotel spa and wellness surrounds. Loungers, daybeds, and seating around spa pools and treatment areas face chlorinated humidity and frequent contact with damp skin and swimwear. Indoor wellness environments concentrate chlorinated atmosphere.

Poolside cabanas and loungers. Fabric on furniture immediately around a pool receives direct chlorinated splashing and constant contact with wet swimwear, in addition to full UV exposure.

Yacht pool areas. The pool deck of a yacht combines chlorine, salt, and intense UV. This is the most demanding combination and requires fabric specified for all three exposures simultaneously.

Indoor pool halls. The chlorinated atmosphere of an enclosed pool hall exposes all soft furnishings in the space to airborne chlorine, not only those in direct contact with water. Curtains, acoustic panels, and seating some distance from the pool edge are affected.

What to Specify

The specification response to chlorine exposure centres on dye method and coating chemistry.

Solution-dyed fibres. In a solution-dyed fibre, the colour pigment is added to the polymer before the fibre is formed, so the colour is integral to the fibre rather than applied to its surface. This gives dramatically better resistance to both UV and chemical bleaching than piece-dyed or yarn-dyed fabric, because there is no surface dye layer for the chlorine to attack. Solution-dyed acrylic is the established specification for demanding pool and exterior environments.

Chlorine-resistant coated fabrics. For coated fabrics, the coating chemistry determines chlorine resistance. Silicone leather offers the best chemical resistance of the coated types, including resistance to the oxidising action of chlorine, and is stable under the combination of chlorine, UV, and temperature found in pool environments. PVC performance varies by formulation and should be confirmed for chlorine exposure specifically rather than assumed from general water resistance.

Confirmed chlorine performance. Because standard light fastness data does not predict chlorine resistance, request confirmation of chlorine or bleach resistance specifically. Where a manufacturer has tested for chlorine exposure, they can provide that data. Where they cannot, the fabric has not been validated for the application regardless of its UV performance.

What to Avoid

Piece-dyed and yarn-dyed natural fibre fabrics should not be specified for direct chlorine exposure. The surface dye is vulnerable to chlorine bleaching regardless of the fibre’s other qualities. This includes fabrics that perform well in every other respect but have not been dyed by a solution method.

Fabric selected solely on UV light fastness should not be assumed suitable for pool environments. A high Blue Wool Scale rating confirms resistance to photochemical fading but says nothing about chemical bleaching by chlorine.

Standard interior upholstery fabric, however durable, is not suitable for direct poolside or spa-surround use. The combination of moisture, chlorine, and in most cases UV exceeds what interior fabric is designed to withstand.

Quick answers

Why does chlorine damage fabric?
Chlorine is a bleaching agent. It oxidises and breaks down the chemical bonds in textile dyes, causing fading, colour change, and eventually bleaching. This is a chemical mechanism distinct from the photochemical fading caused by UV light, which means a fabric can have excellent UV light fastness and still fade rapidly in a chlorine environment. Chlorine can also degrade the polymer surface of some coated fabrics over time, causing embrittlement or discolouration separate from the dye bleaching.

Is poolside fabric the same as marine fabric?
Not quite. Marine specification addresses salt and UV. Poolside specification adds chlorine, a chemical bleaching agent, on top of the UV exposure any exterior application faces. A yacht with a pool combines all three: salt, UV, and chlorine. A hotel spa surround may have little salt but high chlorine and humidity. The specification must address the specific combination present, and chlorine resistance is the dimension most often overlooked because it is not part of the standard marine or outdoor brief.

What fabric is best for poolside and spa areas?
Solution-dyed fibres, in which the colour pigment is added to the polymer before the fibre is formed, offer the best resistance to chlorine bleaching because there is no surface dye layer for the chlorine to attack. Solution-dyed acrylic is the established specification for demanding pool environments. Among coated fabrics, silicone leather has the best chemical resistance including resistance to chlorine, and is stable under the combination of chlorine, UV, and temperature found around pools.

Does light fastness rating predict chlorine resistance?
No. Light fastness, measured by the Blue Wool Scale under UV exposure, predicts resistance to photochemical fading from sunlight. It does not predict resistance to chemical bleaching by chlorine, which attacks the dye by a different route. A fabric with a high light fastness rating can still fade rapidly in a chlorine environment. For pool and spa applications, request confirmation of chlorine or bleach resistance specifically, in addition to the light fastness data.

Can standard upholstery fabric be used around a pool?
No. Standard interior upholstery fabric, however durable in abrasion terms, is not suitable for direct poolside or spa-surround use. The combination of moisture, chlorine, and in most cases UV exposure exceeds what interior fabric is designed to withstand. Piece-dyed and yarn-dyed fabrics are particularly vulnerable because their surface dye is attacked by chlorine. Specify solution-dyed fibres or chlorine-resistant coated fabrics with confirmed chlorine performance instead.

For fully exposed outdoor and semi-outdoor specification, see our outdoor terrace fabric specification guide. For the marine fire and UV dimension, see our IMO marine fire standards guide. For coated fabric chemical resistance, see our faux leather types compared guide.

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Lead Times, Cuttings and Custom Colour Matching for Commercial Projects

Cuttings first: Request cuttings early to confirm colour, handle, and quality before the fabric is committed to a scheme.
Dye lots: Fabric colour varies between dye lots. A large or phased contract order must be secured against dye lot variation from the outset.
Lead times vary by fabric type: Stock fabric ships quickly; woven-to-order, treated, and bespoke-colour fabric carries longer and more variable lead times.
Plan backwards: Work back from the installation date through treatment, weaving, and cutting-approval stages to establish when the order must be placed.

The operational side of fabric specification, cuttings, lead times, dye lots, and custom colour, is where contract projects most often encounter avoidable delay and cost. A fabric selected correctly on performance can still cause a problem if the lead time is not understood, the dye lot is not secured, or a custom colour is commissioned without allowing for the approval process. This guide sets out the practical sequence for managing fabric procurement on a commercial project.

For the stage at which each fabric decision belongs in a project, see our RIBA Plan of Work fabric guide. To request cuttings, visit KOTHEA.com/cuttings.

Cuttings: Confirming the Fabric Before Commitment

A cutting is a physical sample of the actual fabric, and it is the only reliable way to confirm colour, handle, texture, and quality before committing a fabric to a scheme. Screen and print representations of fabric colour are unreliable: a colour on a monitor or a printed colour card differs from the real fabric because of the difference between emitted and reflected colour and the effect of the fabric’s texture and pile on how it reflects light.

Request cuttings early in the selection process, while there is still time to consider alternatives. A cutting confirms not only the colour but the hand of the fabric, how it drapes, the character of the pile or weave, and the quality of the construction. For a contract project these should be confirmed against the actual fabric before specification is finalised, not assumed from a colour card.

Where a scheme depends on the relationship between several fabrics, request cuttings of all of them together so the combination can be assessed as it will appear in situ. Colours that work individually on separate cards may relate differently when the actual fabrics are seen side by side under the project’s lighting conditions.

Dye Lots and Why They Matter for Contract Orders

Fabric is dyed in batches, and each batch is a dye lot. Colour varies slightly between dye lots even for the same fabric and colourway, because the dyeing process cannot be replicated with perfect precision from one batch to the next. For a small residential order cut from a single roll this is rarely an issue. For a contract order it can be a significant problem.

A large contract order that draws fabric from more than one dye lot risks visible colour variation between pieces of furniture, between runs of curtains, or between panels that are seen together. A phased project, where fabric is ordered at intervals as the installation progresses, risks later phases being supplied from a different dye lot than earlier phases.

The way to manage this is to secure sufficient fabric from a single dye lot at the outset to cover the whole requirement, including a wastage and future-repair allowance. Where a project is phased, discuss dye lot reservation with the supplier at the point of first order so that later phases can be supplied from the same lot or from a reserved allocation. This must be arranged in advance; it cannot be corrected once the initial dye lot is exhausted.

Lead Times by Fabric Type

Lead time varies substantially by fabric type, and understanding the difference is essential to project scheduling.

Stock fabric. Fabric held in stock in the required colourway ships in the shortest time, typically limited only by order processing and delivery. This is the fastest route but is available only where the specific fabric and colourway are held in sufficient quantity.

Woven-to-order fabric. Fabric that is woven to order rather than held in stock carries a manufacturing lead time. For handwoven and specialist fabrics this can be a matter of weeks. The cashmere throws, for example, are handwoven to order with a lead time of approximately two to three weeks from order confirmation. Woven-to-order lead times must be built into the project programme from the point of specification.

FR-treated fabric. Fabric requiring topical flame-retardant treatment carries the treatment lead time in addition to the fabric lead time. The fabric must be sourced, sent for treatment, treated, tested, and certified before it can be installed. Each stage takes time and the testing and certification stage in particular cannot be compressed. For contract projects requiring treated fabric, the treatment lead time is often the critical path item.

Bespoke-colour fabric. Fabric woven or dyed to a custom colour carries the longest and most variable lead time because it combines a colour-matching approval process with a manufacturing run.

Custom Colour Matching

Custom colour matching allows a fabric to be produced in a specific colour to suit a scheme, rather than selecting from the standard colourways. It is a valuable capability for contract projects with a defined palette, but it carries a process that must be allowed for in the programme.

The process begins with a colour reference, ideally a physical sample rather than a screen or print colour, since the same considerations apply as for cuttings. The mill produces a lab dip or strike-off, a small sample of the fabric dyed to the target colour, for approval. This is assessed against the reference, and if it is not correct the mill produces a revised dip. This approval cycle may take one or more iterations, each of which takes time.

Once the colour is approved, the fabric is woven or dyed to order in the approved colour, which is a manufacturing lead time on top of the approval process. There is usually a minimum order quantity for a bespoke colour, since the mill is setting up a production run for a specific requirement.

For a contract project, custom colour matching should be initiated as early as possible once the palette is confirmed, because the approval cycle plus the manufacturing run makes it the longest-lead item in most fabric procurement. Confirm the expected number of approval iterations, the minimum order quantity, and the total lead time with the supplier before committing to a bespoke colour, so the programme can accommodate it.

Planning the Procurement Sequence

The reliable way to avoid fabric-related delay on a contract project is to work backwards from the installation date. Establish when the fabric must be on site, then work back through each stage that applies to the specific fabric: installation, delivery, treatment and certification if required, manufacturing or weaving, custom colour approval if required, and cutting approval. The sum of these stages gives the latest date by which the order must be placed.

For a stock fabric in a standard colourway with no treatment requirement, this sequence is short. For a bespoke-colour, FR-treated, woven-to-order fabric, it can extend to several months, and each stage depends on the one before it. Identifying the critical path early, and placing the order to accommodate it, is the single most effective way to prevent fabric from delaying a project.

Quick answers

Why should I request cuttings before specifying a fabric?
A cutting is a physical sample of the actual fabric and is the only reliable way to confirm colour, handle, texture, and quality before committing it to a scheme. Screen and printed colour representations are unreliable because emitted and reflected colour differ and because a fabric’s texture and pile affect how it reflects light. Request cuttings early, and where a scheme depends on several fabrics together, request cuttings of all of them so the combination can be assessed as it will appear in situ.

What is a dye lot and why does it matter for contract orders?
Fabric is dyed in batches, and each batch is a dye lot. Colour varies slightly between dye lots because dyeing cannot be replicated with perfect precision from batch to batch. For a large contract order drawing from more than one dye lot, this risks visible colour variation between pieces seen together. Secure sufficient fabric from a single dye lot at the outset to cover the whole requirement plus a repair allowance, and for phased projects arrange dye lot reservation with the supplier at first order.

How long does FR-treated fabric take to supply?
FR-treated fabric carries the treatment lead time in addition to the fabric lead time. The fabric must be sourced, sent for treatment, treated, tested, and certified before installation. The testing and certification stage in particular cannot be compressed. For contract projects requiring treated fabric, the treatment lead time is often the critical path item, so it should be identified and built into the programme from the point of specification rather than assumed to be a short additional step.

How does custom colour matching work?
Custom colour matching begins with a colour reference, ideally a physical sample. The mill produces a lab dip or strike-off, a small sample dyed to the target colour, for approval against the reference. If it is not correct, a revised dip is produced, and this approval cycle may take several iterations. Once approved, the fabric is woven or dyed to order, which is a manufacturing lead time on top of the approval process, usually with a minimum order quantity. It is typically the longest-lead item in fabric procurement.

How far in advance should I order fabric for a commercial project?
Work backwards from the installation date through each stage that applies to the specific fabric: installation, delivery, treatment and certification if required, manufacturing or weaving, custom colour approval if required, and cutting approval. For a stock fabric in a standard colourway this sequence is short. For a bespoke-colour, FR-treated, woven-to-order fabric it can extend to several months, with each stage dependent on the one before. Identify the critical path early and place the order to accommodate it.

For the project stage at which each fabric decision belongs, see our RIBA Plan of Work fabric guide. For hotel and hospitality specification including dye lot strategy, see our hotel fabric specification guide. To request cuttings from the KOTHEA range, visit KOTHEA.com/cuttings.

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Fabric for Outdoor Terraces and Semi-Outdoor Spaces: A Specifier’s Guide

The core distinction: Fully exposed outdoor upholstery — uncovered garden furniture, open roof terraces, open deck furniture on yachts — requires solution-dyed acrylic or similarly engineered outdoor fabric. No standard interior upholstery fabric is appropriate for this application regardless of treatment.
Covered and semi-outdoor spaces — glazed atriums, covered hotel terraces, loggia, indoor-outdoor restaurant areas — have more flexible requirements. High-grade faux leather with outdoor ratings and selected contract fabrics with UV resistance are appropriate where direct weathering does not occur.
The UV question: Light fastness grade 6 to ISO 105-B02 is the minimum for any fabric in high sun exposure. Grade 7 or above for south-facing unshaded locations. Standard interior fabrics typically achieve grade 4 to 5 and will fade visibly within one to two seasons in direct sun.
Marine crossover: The same fabric types used on hotel terraces are specified for yacht cockpits and deck-level saloons. The fire standard requirement differs — hotel terraces follow building regulations, yacht interiors follow IMO FTP Code. See our IMO marine fire standards guide for the yacht specification in full.

Hotel terraces, covered restaurant areas, glazed atriums, and loggia represent some of the most demanding fabric specification environments in interior design. They combine the aesthetic expectations of a fully designed interior with the performance requirements of an outdoor environment — UV exposure, moisture, temperature variation, and cleaning regimes that would destroy most standard upholstery fabric within a season. Getting the specification right requires understanding exactly where a space sits on the spectrum from fully sheltered interior to fully exposed exterior, and selecting fabric accordingly.

Mapping the Exposure Level

The starting point for any outdoor or semi-outdoor fabric specification is an accurate assessment of what the fabric will actually be exposed to. The relevant variables are direct UV exposure, moisture exposure, and temperature variation.

Fully exposed outdoor — uncovered garden furniture, open roof terrace seating, poolside sun loungers, open deck furniture on yachts — represents maximum exposure to UV, rain, humidity, and temperature cycling. Only fabrics engineered specifically for this application are appropriate. Solution-dyed acrylic is the industry standard. The dye is incorporated into the fibre during extrusion rather than applied to the surface, so it cannot fade or wash out regardless of UV exposure or repeated wetting. Standard interior upholstery fabric, including contract grades with high Martindale counts and FR certification, is not appropriate for this application.

Covered outdoor — a terrace with a solid permanent roof, a covered loggia, a pergola with solid cover — receives indirect UV exposure, minimal direct rain, and some temperature variation. High-grade faux leather with outdoor ratings, solution-dyed acrylic, and selected high-UV-resistance contract fabrics are all appropriate. Standard interior fabric without UV resistance will fade and degrade, though more slowly than in fully exposed locations.

Glazed indoor-outdoor — a glazed atrium, a conservatory restaurant, a winter garden, an indoor-outdoor bar with large opening glazed screens — receives significant UV transmission through glass and elevated temperature, but no direct moisture. UV transmits through standard glass — less than direct sunlight but enough to cause significant fading in fabrics rated at grade 4 to 5 over two to three years. Fabrics in these spaces should carry a minimum light fastness grade of 6 and ideally 7.

Semi-outdoor with intermittent exposure — a restaurant with retractable roof panels, a terrace with awnings deployed during rain — falls between categories. Specify for the worst exposure condition the fabric will regularly experience, not the average.

Pool and spa surrounds add a further variable that outdoor UV and moisture specification does not address: chlorine, which chemically bleaches dyes and degrades coatings by a different mechanism than sunlight. For poolside, spa, and chlorine-exposed environments, see our poolside and chlorine-exposed fabric guide.

Solution-Dyed Acrylic: The Standard for Fully Outdoor Use

Solution-dyed acrylic is the benchmark specification for fully exposed outdoor upholstery. The fibre is dyed in the polymer melt stage before extrusion, making the colour a structural part of the fibre rather than a surface application. The result is a fabric that is genuinely colourfast to UV exposure — tested light fastness grades of 7 to 8 to ISO 105-B02 are standard for quality solution-dyed acrylic, compared to 4 to 5 for most piece-dyed interior fabrics.

Solution-dyed acrylic is also water-repellent, mould and mildew resistant, and dimensionally stable under repeated wetting and drying. Martindale rub counts for outdoor-grade acrylic are typically in the 30,000 to 50,000 range, adequate for hotel terrace and restaurant seating applications. The fabric can be cleaned with mild soap and water, and many outdoor acrylic fabrics can be machine washed.

The limitation of solution-dyed acrylic is aesthetic. The material has a different handle and surface character from interior upholstery fabrics. High-end hotel terrace projects that require a premium interior aesthetic often use solution-dyed acrylic for fully exposed seating and transition to higher-grade fabric for covered or interior-adjacent areas.

Faux Leather for Outdoor and Semi-Outdoor Applications

High-grade faux leather — specifically PVC and PU constructions with outdoor performance ratings — is the most practical specification for covered terraces, glazed indoor-outdoor areas, and any semi-outdoor application where the aesthetic demands a more premium material than outdoor acrylic.

Faux leather’s smooth, non-porous surface is inherently resistant to moisture and easy to clean, making it well suited to terrace and outdoor dining environments. The critical performance variable for outdoor use is the UV stability of the top coat. Standard interior-grade faux leather will chalk, crack, and delaminate when exposed to sustained UV and temperature cycling. Outdoor-rated faux leather carries a UV-stable top coat with independently tested colour fastness at grade 6 or above and is formulated to resist the temperature differential between sun-exposed and shaded surfaces.

Kothea’s faux leather ranges include products with outdoor performance ratings suitable for covered terraces, semi-outdoor dining areas, and indoor-outdoor applications. Dedicated outdoor fabric ranges are also carried periodically — availability varies by season and current stock. Contact us directly to discuss current outdoor-rated options for a specific project. For faux leather types compared including PVC and PU, see our faux leather types guide.

Fire Standards for Hotel Terraces and Outdoor Hospitality Spaces

The fire standard requirement for fabric in outdoor and semi-outdoor hospitality settings is determined by whether the space is classified as a non-domestic building under UK building regulations and fire safety legislation, not by whether it is physically outdoors.

A hotel terrace or covered restaurant area that is part of a non-domestic building is subject to the Regulatory Reform (Fire Safety) Order 2005. For upholstered seating in hotel and restaurant environments, this is typically BS 7176 Medium Hazard, which requires BS 5852 Crib 5 certification. For curtains or fabric wall treatments in these areas, BS 5867 Part 2 Type B applies.

The practical implication is that specifying outdoor fabric for a hotel terrace is not simply a question of UV resistance — the fabric must also carry appropriate fire certification. Solution-dyed acrylic outdoor fabrics are not automatically Crib 5 certified. Confirm fire certification with the supplier for the specific fabric being specified. For the BS 7176 and Crib 5 requirements in full, see our Crib 5 guide and our hotel fabric specification guide.

The Marine Crossover: Yacht Decks and Hotel Terraces

The same fabric categories used on hotel terraces are specified for yacht cockpits, deck-level saloons, and flybridge seating (sometimes referred to as boat cockpits or boat deck seating) — the exposed and semi-exposed areas of a yacht interior. The performance requirements are directly parallel: UV resistance, moisture tolerance, ease of cleaning, and structural integrity under temperature variation. Solution-dyed acrylic and outdoor-rated faux leather are the two primary specifications in both contexts.

The key difference is the fire standard. Hotel terraces follow UK building regulations and BS 7176. Yacht interiors are subject to IMO FTP Code requirements under MCA MGN 580 for UK-flagged vessels — a different regime. A fabric that meets Crib 5 for a hotel terrace may not meet the IMO FTP Code Part 8 requirement for a yacht. The certifications are not interchangeable. For the complete specification for yacht and marine interiors, including a downloadable yacht fabric specification checklist, see our IMO marine fire standards guide.

Light Fastness: Minimum Grades by Location

Fully exposed outdoor locations require grade 7 to 8. Only solution-dyed acrylic and equivalent engineered outdoor fabrics achieve this reliably. Grade 6 is the minimum acceptable for covered outdoor locations with significant indirect UV exposure. Glazed indoor-outdoor areas such as atriums and conservatory restaurants should be specified at grade 6 as a minimum, and grade 7 where the glazing is south-facing or large area. Standard interior contract upholstery achieving grade 4 to 5 is not appropriate for any of these applications.

For the Blue Wool Scale explained in full including how light fastness is tested and what the grades mean for different applications, see our light fastness and Blue Wool Scale guide.

Cleaning and Maintenance in Outdoor Environments

Outdoor and semi-outdoor upholstery is subjected to cleaning regimes significantly more demanding than interior upholstery. Hotel terrace seating may be wiped down multiple times per day with cleaning products that would degrade an interior fabric rapidly. Confirm the specific cleaning products used by the operator before finalising a fabric specification for any hospitality outdoor application.

Solution-dyed acrylic is compatible with mild soap and water and most standard hospitality cleaning products. Check the manufacturer’s specific guidance on bleach-based cleaners — some outdoor acrylics tolerate dilute bleach for mould treatment, and some do not. Outdoor-rated faux leather can typically be cleaned with pH-neutral cleaning agents and water, but confirm UV-coat compatibility with the supplier for any chemical outside that range.

Quick answers

Can I use contract upholstery fabric on a hotel terrace?
For a covered terrace with no direct rain exposure and moderate indirect UV, a contract fabric with high light fastness (grade 6 or above) and moisture resistance may be appropriate. For any location with direct sun exposure, a standard contract upholstery fabric will fade and degrade within one to two seasons regardless of its Martindale count or fire certification. Outdoor-rated faux leather or solution-dyed acrylic is required for locations with significant UV exposure.

Does outdoor fabric need Crib 5 certification for a hotel terrace?
Yes, if the terrace is part of a non-domestic building subject to the Regulatory Reform (Fire Safety) Order 2005. The fire safety obligation does not disappear because the space is outdoors. Confirm fire certification for the specific outdoor fabric being specified — not all outdoor fabrics carry Crib 5. For BS 7176 Medium Hazard requirements, see our hotel fabric specification guide.

What is the difference between hotel terrace fire standards and yacht fire standards?
Hotel terraces follow UK building regulations and BS 7176 Medium Hazard requiring Crib 5 certification. Yacht interiors follow IMO FTP Code requirements under MCA MGN 580 — a different regime that is not equivalent to Crib 5. A fabric certified for a hotel terrace is not automatically compliant for a yacht interior. See our IMO marine fire standards guide for the yacht requirements in full.

What light fastness grade do I need for a glazed atrium?
A minimum of grade 6 to ISO 105-B02. For south-facing or large-area glazing, specify grade 7 where possible. UV transmits through standard glass — enough to cause significant fading in fabrics rated at grade 4 to 5 over two to three years. Confirm the light fastness grade per colourway, not just for the fabric range, as different colourways can have significantly different light fastness performance.

Does Kothea supply outdoor fabric?
Kothea’s faux leather ranges include products with outdoor performance ratings suitable for covered terraces and semi-outdoor applications. Dedicated outdoor fabric ranges are carried periodically. Contact us directly to discuss current outdoor-rated options for your project at KOTHEA.com/cuttings.

For the IMO fire standards for yacht and marine interiors, see our IMO marine fire standards guide. For light fastness grades and the Blue Wool Scale, see our light fastness guide. For faux leather types and outdoor performance ratings, see our faux leather types guide. For hotel and hospitality fire certification, see our hotel fabric specification guide. To discuss outdoor fabric options for a specific project, visit KOTHEA.com/cuttings.

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When to Specify Contract-Grade Fabric for a Residential Project

The core question: Contract-grade fabric is defined by performance — abrasion resistance, dimensional stability, cleaning codes, and fire certification — not by who owns the building. A domestic client with the right lifestyle needs the same performance specification as a hotel.
The threshold: If the fabric will be cleaned more than once a week, used by more than four people daily, exposed to pets, children, or direct sunlight for most of the day, or needs to last ten or more years without replacement, specify to contract standards.
The fire question: Residential upholstery fire standards are less demanding than contract standards. The decision to specify to contract fire standards in a residential setting is a performance and longevity choice, not a legal requirement — unless the property will be let or used commercially.
The cost: Contract-grade fabric typically costs more per metre. The total cost of ownership over the fabric’s lifetime is almost always lower than replacing a domestic-grade fabric ahead of schedule.

Interior designers work across both residential and contract projects, and the distinction between the two is not always as clear as the categories suggest. The technical performance standards associated with contract fabric — high Martindale rub counts, robust cleaning codes, dimensional stability, and fire certification — exist because contract environments subject fabric to sustained, intense use. Many residential environments subject fabric to exactly the same conditions. A family home with children, dogs, and a heavily used kitchen-living space puts more stress on upholstery fabric than a hotel bedroom. The question of whether to specify contract-grade fabric for a residential project is always a performance question, not a question of category.

What Contract-Grade Fabric Actually Means

Contract-grade is not a single defined standard. It is a shorthand for a cluster of performance characteristics that fabric must demonstrate to be considered suitable for commercial environments.

Abrasion resistance is measured by the Martindale rub test. Contract minimum for light commercial use is 30,000 rubs. Heavy domestic upholstery is typically specified at 25,000 rubs, but a heavily used family sofa may see comparable abrasion to a hotel bedroom chair over a five-year period. For a residential client who expects their upholstery to last a decade, specifying at 40,000 to 60,000 rubs is a more reliable guarantee than the 25,000 rubs commonly associated with domestic use. For the Martindale test explained in full, see our Martindale rub test guide.

Pilling resistance is separately tested and separately important. A fabric with a high Martindale abrasion count may still pill badly in residential use if the pilling resistance is not confirmed. Pilling is more visible on residential upholstery than in commercial settings because the lighting is more intimate and the inspection more frequent. Always request the ISO 12945-2 pilling grade alongside the Martindale result for any residential upholstery fabric expected to last more than five years. See our pilling resistance guide.

Cleaning codes determine how the fabric can be maintained. A fabric coded S — solvent cleaning only — is correctly specified for a residential client who has professional cleaning arranged annually. It is incorrectly specified for a client whose housekeeper cleans the upholstery weekly with water-based products. Confirming the cleaning regime before selecting a fabric prevents a situation where the cleaning method in use degrades a fabric that would otherwise have performed well.

Dimensional stability and light fastness are less discussed but equally relevant. A fabric on a south-facing window seat needs the same light fastness grade as a fabric in a hotel atrium. These requirements do not change because the client is a private individual.

Residential Situations That Require Contract-Grade Performance

Families with young children and dogs represent the most common category. Fabrics in these households are subjected to abrasion, staining, repeated cleaning, and impact that would fail most domestic-grade fabrics within three to five years. A client in this situation who expects their upholstery to last a decade needs fabric specified at heavy domestic to light contract abrasion levels, with a cleaning code compatible with the products they will actually use, and ideally with an inherent or applied stain resistance treatment.

High-traffic living spaces where the upholstery is in continuous use — an open-plan family kitchen-dining-living room where the sofa is occupied for most of the day — accumulate abrasion at a rate closer to a hotel lobby than a formal sitting room. The number of people using a piece of furniture daily and the hours per day it is in use are more reliable guides to required Martindale count than the domestic or contract classification of the building.

Home cinemas and media rooms present a specific challenge. Seating in a dedicated home cinema is often specified with tight upholstery and limited maintenance access. The abrasion on armrests and seat edges in regular use is significant. Fabric for this application should be at light to general contract abrasion levels with a robust cleaning code.

Rental and investment properties where the client is not the occupant are the clearest case for contract specification. A landlord furnishing a rental property for occupation by unknown tenants has no ability to control how the upholstery is used or cleaned. Contract abrasion levels, robust cleaning codes, and where possible inherent stain resistance are the correct specification.

Second homes and holiday properties with intermittent high use present a different problem. The fabric is unused for extended periods and then subjected to intensive use by multiple occupants in a short time. Specify for the intensive use periods, not the average use across the year.

Clients who simply cannot face re-upholstery. Some residential clients are replacing upholstery for the second or third time and have an explicit requirement that the fabric lasts fifteen or twenty years. This is a realistic specification target with the right fabric choice. A mohair velvet in the 80,000 to 100,000 Martindale rub range will outlast the furniture frame in a normal residential setting.

The Fire Standard Question in Residential Contexts

Residential upholstery in the UK is subject to the Furniture and Furnishings (Fire Safety) Regulations 1988, which require cover fabrics to pass cigarette and match resistance tests — a significantly less demanding standard than the BS 5852 Crib 5 test required for contract upholstery. Specifying to Crib 5 standard in a domestic setting is not legally required but is a straightforward performance upgrade that costs little or nothing if the fabric already carries the certification.

The fire standard question becomes a legal one in a residential context only when the property crosses into commercial or rental use. A property let on a short-term basis, an Airbnb, a serviced apartment, or a holiday let where the owner is not in residence are all subject to the Regulatory Reform (Fire Safety) Order 2005. In these situations, contract fire certification is legally required, not optional. For the distinction between domestic and contract fire standards, see our Crib 5 guide.

How to Have the Conversation with a Residential Client

Most residential clients do not know what Martindale means and do not need to. The relevant questions are practical ones about how the client actually lives. How many people use this piece of furniture daily, and for how long? Do you have children under ten, or dogs? How do you clean your upholstery at the moment, and how often? How long are you expecting this fabric to last? Would you prefer to pay more now for a fabric that lasts fifteen years, or less now and plan to re-upholster in five? Is this property going to be rented or used as a holiday let?

The answers map directly onto a performance specification. A client who says daily use by four people, two dogs, housekeeper cleans weekly with standard products, and wants it to last ten years needs a contract-grade fabric whether the project is residential or not. A client who says occasional use in a formal sitting room, no pets, professional cleaning once a year, and happy to re-upholster in seven years can be served perfectly well with a well-chosen domestic-grade fabric.

The value of this conversation is that it protects the relationship. A fabric that fails in three years because the client’s lifestyle was never discussed is a reputational problem. A fabric that is still performing well after ten years because the specification matched the life being lived in the space is the reason clients return.

Quick answers

Do I need contract fabric for a residential project?
It depends on how the space will be used, not on whether the client is a private individual. High-traffic family living spaces, homes with young children or pets, rental properties, and clients who need fabric to last a decade or more should be specified to contract performance levels. The legal requirement for contract fire certification only applies when the property is let or used commercially.

What Martindale count should I specify for a family home?
For a heavily used family sofa or kitchen chair, specify a minimum of 40,000 rubs. For a client expecting the fabric to last ten or more years, specify 60,000 rubs or above. Light domestic upholstery in occasional-use rooms can be specified at 25,000 rubs. See our Martindale rub test guide for full threshold guidance.

What is the difference between domestic and contract fire standards?
Domestic upholstery must meet cigarette and match resistance tests under the Furniture and Furnishings (Fire Safety) Regulations 1988. Contract upholstery in non-domestic premises must meet BS 5852 Crib 5, a significantly more severe ignition test. For residential properties that are let or used commercially, contract standards apply.

Can the same fabric be used for both residential and contract projects?
Yes. A fabric certified to BS 5852 Crib 5 with a Martindale count above 30,000 can be specified for both residential and contract use. Many of Kothea’s mohair velvet and faux leather ranges carry contract certification and are regularly specified for both contexts.

For Martindale rub count thresholds by application, see our Martindale rub test guide. For Crib 5 and the fire standards for contract upholstery, see our Crib 5 guide. For pilling resistance as a separate specification consideration, see our pilling resistance guide. For mohair velvet ranges with high abrasion resistance and contract certification, see our mohair velvet upholstery page. To request cuttings, visit KOTHEA.com/cuttings.

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Does Velvet Absorb Sound? Fabric for Home Studio Acoustics Explained

Mohair Velvet Upholstery Silk

Does velvet absorb sound? Yes, to a meaningful degree. Heavy velvet reduces echo and reverberation by absorbing mid and high frequency sound energy through its pile fibres. It is a legitimate acoustic treatment for home studios and music rooms, not a myth.
What it does not do: Velvet does not soundproof a room. It will not prevent sound reaching neighbours or stop external noise entering. Absorption and insulation are different problems requiring different solutions.
How much difference does it make? Heavy velvet hung with pleats achieves an NRC (Noise Reduction Coefficient) in the range of 0.35 to 0.65, compared to bare plaster at 0.05. That is a material improvement in room acoustics. Purpose-built acoustic panels with a mineral wool core achieve 0.75 to 1.0.
Which velvet: Weight matters more than fibre type. Heavy mohair velvet or heavyweight cotton velvet installed floor to ceiling with generous pleating performs significantly better than lightweight or tightly stretched fabric. The pile and the air trapped within it are what absorb the sound.

Interior designers are frequently asked to improve the acoustic character of a home studio, music room, or home cinema. The question of whether velvet on the walls actually helps — or whether it is purely decorative — comes up regularly and is worth answering precisely. The short answer is that heavy velvet is a legitimate acoustic treatment that meaningfully reduces echo and reverberation in a room. This guide explains why, how to specify fabric for the best acoustic result, and how to set accurate expectations with clients about what fabric can and cannot achieve.

Sound Absorption and Sound Insulation: Two Different Problems

The most important distinction to establish before specifying any fabric for acoustic purposes is the difference between sound absorption and sound insulation. They are frequently confused, including by clients, and specifying for the wrong objective produces a result that disappoints.

Sound absorption reduces echo, reverberation, and the liveness of a room. It improves the acoustic quality of sound generated within the space — speech is clearer, musical instruments sound more controlled, recordings pick up less room ambience. Soft furnishings, heavy curtains, upholstered furniture, and fabric wall treatments all contribute to sound absorption. They work by trapping sound energy in the fibres and air pockets of the material and converting it to a small amount of heat, preventing it from reflecting back into the room.

Sound insulation prevents sound from transmitting through walls, floors, and ceilings from one space to another. It is an engineering problem involving mass, airtight construction, and the isolation of structural vibration paths. It requires dense, heavy materials and is addressed during construction, not decoration. Fabric on walls has almost no effect on sound insulation. A client who wants to record vocals without disturbing neighbours needs structural acoustic treatment, not fabric.

For most home studio and music room projects, the client’s actual need is sound absorption — a room that sounds controlled and pleasant to record or listen in. Fabric is the right solution for that objective.

Why Heavy Velvet Works Acoustically

Velvet pile consists of cut fibre loops standing upright from a woven backing. This structure creates a large surface area of individual fibres and the air spaces between them. When a sound wave strikes the fabric, the fibres vibrate slightly, converting some of the sound energy into heat through friction. The air trapped within the pile absorbs additional energy. The result is that a proportion of the incoming sound is absorbed rather than reflected back into the room.

The key variables are weight, pile depth, and installation method. Heavier fabric contains more fibre per square metre and absorbs more sound energy. A fabric at 600 to 700 grams per square metre will outperform the same fabric construction at 300 grams per square metre. Pile depth also contributes — a deeper pile traps more air and increases absorption. Installation with generous pleating rather than tightly stretched flat significantly improves performance, because the folds create additional thickness and air space.

The frequency range absorbed most effectively by heavy fabric is mid and high frequencies — broadly, from around 500 Hz upward, which covers speech, most musical instrument fundamentals, and the harmonics that give recorded sound its character. Low frequency absorption, below 250 Hz, is very difficult to achieve with fabric alone and requires specifically engineered bass traps. For home studio applications where low frequency control is important, fabric treatment should be combined with corner-mounted bass traps rather than relied upon alone.

Mohair Velvet and Cotton Velvet Compared for Acoustic Use

Both mohair velvet and cotton velvet perform well as acoustic treatments. Mohair velvet has a longer, more lustrous pile and higher pile density. The fibre is resilient and springs back to shape after contact, maintaining the pile structure and the air spaces within it over time. For acoustic applications, mohair velvet’s higher pile weight and density give it a slight performance advantage over cotton velvet of equivalent overall weight. Mohair velvet also carries higher inherent fire resistance than cotton, which is relevant where a fire certificate is required.

Cotton velvet is heavier per linear metre in many commercial ranges, which compensates for the shorter pile. A heavyweight cotton velvet at 650 grams per square metre or above performs effectively as a room acoustic treatment. Cotton velvet is more affordable than mohair and available in a wider colour range.

In both cases, the weight of the fabric is more important than the fibre type when specifying for acoustic performance. Request the grams per linear metre specification from the supplier and favour heavier options within the range.

How to Specify Fabric Wall Treatments for a Home Studio

Prioritise the rear wall and side walls over the front wall behind the monitor speakers. The rear wall is where most of the unwanted reflections originate in a typical room. Full-height fabric panels on the rear wall and the first reflection points on the side walls will produce the most audible improvement in room acoustics.

Allow generous fullness when specifying the fabric quantity. Pleated or gathered fabric performs significantly better than fabric stretched flat. A fullness ratio of 150 to 200 percent — one and a half to two times the width of the wall — creates the folds that improve absorption. If the client prefers a flat panel aesthetic, a fabric-wrapped panel with a mineral wool or acoustic foam core behind the face fabric will achieve higher NRC values than fabric alone.

Velvet used directly on a wall performs as a direct absorber. Transparent open-weave fabrics are used to cover acoustic panel cores, allowing sound to pass through to the absorptive substrate. The two approaches are different but both effective. Velvet is more appropriate for decorative wall panel treatments; transparent fabrics are more appropriate for dedicated acoustic panel systems.

Confirm fire certification requirements before specifying. In a domestic home studio, there is no legal contract fire certification requirement for fabric on walls. If the room is in a property that will be let or used commercially, the fabric may need to achieve BS 476 Part 7 Class 1. See our BS 476 Part 7 guide.

Setting Client Expectations

A client who records acoustic guitar and wants a warm, controlled sound in a spare bedroom will find that heavy velvet wall treatments make a noticeable and meaningful difference. A client who plays drums or amplified electric guitar at volume and wants to avoid noise complaints has a structural problem that fabric cannot solve. Establishing this clearly at the outset protects both the client’s expectations and the designer’s relationship with the client.

Quick answers

Does velvet on walls actually reduce echo in a home studio?
Yes. Heavy velvet absorbs mid and high frequency sound energy through its pile fibres, reducing the reflections that cause echo and reverberation. The NRC of heavy pleated velvet is in the range of 0.35 to 0.65 — significantly better than bare plaster at 0.05, though lower than purpose-built acoustic panels at 0.75 to 1.0. For a home studio where aesthetics matter alongside performance, velvet is a practical and effective choice.

Can velvet soundproof a room?
No. Velvet absorbs sound within a room but does not prevent sound from transmitting through walls, floors, or ceilings. Soundproofing requires mass and structural isolation addressed during building work. If the goal is to prevent noise reaching neighbours, a structural acoustic consultant is needed.

What weight of velvet should I specify for a home studio?
Favour fabrics at 500 grams per linear metre or above. Install with generous fullness — 150 to 200 percent — rather than stretched flat. Floor-to-ceiling coverage on the rear wall and side walls will produce the most audible improvement.

Is mohair velvet better than cotton velvet for acoustic treatment?
Both perform well. Weight matters more than fibre type — choose the heavier option within whichever range meets the client’s aesthetic and budget requirements. Mohair velvet has higher pile density and resilience; cotton velvet is often available at higher overall weights and broader colour ranges.

Does fabric on walls need fire certification in a home studio?
In a privately occupied domestic home studio, no legal fire certification is required for decorative fabric on walls. If the property will be let or used commercially, BS 476 Part 7 Class 1 may be required. See our BS 476 Part 7 guide.

For mohair velvet ranges suitable for wall panel applications, see our mohair velvet upholstery page. For velvet types compared including pile weight and construction, see our velvet types compared guide. For fabric on wall panels and the relevant fire standards, see our wall panels and headboards guide. To request cuttings from the Kothea range, visit KOTHEA.com/cuttings.

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The Building Safety Act 2022 and Fabric Specification: What Interior Designers Need to Know

What the Act introduced: A Principal Designer role with legal duties to ensure all design work — including material specification — complies with Building Regulations. Operative from 1 October 2023 for all projects requiring building control approval.
Higher-risk buildings: Residential buildings 18 metres or more in height, or seven or more storeys. Additional, more stringent duties apply to all design work on these buildings.
What this means for fabric specification: Any designer specifying materials in a higher-risk building must be able to demonstrate competence in fire safety compliance. Every fabric specification decision that affects fire safety must be documented and retained as part of the building’s safety case.
Who this applies to: Interior designers, architects, and design-and-build contractors involved in any project requiring building control approval in England.

The Building Safety Act 2022 is the most significant change to the regulation of building design and construction in England since the 1980s. It was enacted in response to the Grenfell Tower disaster and introduced a comprehensive new duty-holder framework, new competence requirements, and a new regulatory body — the Building Safety Regulator (BSR) — with powers to scrutinise and approve higher-risk building work. Interior designers and fabric specifiers are affected by the Act in ways that are not always clearly communicated. This guide explains what the Act requires, what it means for fabric specification decisions, and how to document compliance.

What the Building Safety Act 2022 Does

The Act creates a new regulatory regime for all building work requiring building control approval in England, with additional and more stringent requirements for higher-risk buildings. It does three things relevant to interior designers and fabric specifiers.

First, it introduces a mandatory Principal Designer role for any project with more than one contractor, operative from 1 October 2023. The Principal Designer is responsible for planning, managing, monitoring, and coordinating the design work to ensure compliance with Building Regulations — including fire safety. This is a distinct role from the Principal Designer under CDM Regulations 2015, although the same person or organisation may hold both roles if competent to do so.

Second, it places a duty of competence on anyone carrying out design work. Section 35 of the Act defines competence as having the necessary skills, knowledge, experience, and behaviours. A designer who specifies materials — including fabrics and soft furnishings — in a building subject to the Act must be able to demonstrate that their specification decisions comply with the applicable Building Regulations fire safety requirements.

Third, it introduces a golden thread of information — a continuous, maintained record of design decisions relating to fire safety and structural integrity — that must be created during the design phase, updated through construction, and retained for the life of the building. For higher-risk buildings this is a formal legal requirement. For other buildings the principle of maintaining clear documentation of safety-related design decisions is strongly recommended and increasingly expected by the insurance market.

Higher-Risk Buildings: What They Are and Why They Matter

A higher-risk building (HRB) is defined under the Act as a building of at least 18 metres in height or at least seven storeys, containing at least two residential units. Most tall residential apartment buildings in England meet this definition. Many hotel developments, residential care buildings, and mixed-use developments with residential components also qualify.

For HRB projects, the Building Safety Regulator must approve the design before construction begins at Gateway 2. The Principal Designer must submit a detailed compliance statement demonstrating that the design meets Building Regulations requirements. All duty holders — including designers — must operate a mandatory occurrence reporting system and report any safety occurrence to the BSR.

A safety occurrence is defined as any aspect of the design relating to the structural integrity or fire safety of a higher-risk building that, if built, would present a significant risk of death or serious injury. A fabric specification that does not meet the applicable fire standard — or that uses a topical FR treatment that has degraded without replacement — could in principle constitute a safety occurrence in an HRB context. This is not a theoretical risk. It is the kind of documentation failure that the golden thread requirement is specifically designed to prevent.

What This Means for Fabric Specification

For most interior design projects, the Building Safety Act’s practical impact on fabric specification is not a change in the fire standards that apply — Crib 5, BS 7176, BS 5867 were the applicable standards before the Act and remain so — but a change in the documentation and accountability requirements around compliance with those standards.

Before the Act, a designer who specified a Crib 5-certified fabric for a hotel project was meeting the applicable fire standard. After the Act, that same designer must also be able to demonstrate: that they understood the applicable standard and specified correctly against it; that they obtained a valid test certificate from a UKAS-accredited laboratory; that they documented the specification decision and retained the certificate; and, if the project involves an HRB, that the fabric specification was included in the golden thread information provided to the Principal Designer and ultimately to the building owner.

The practical implication is that fabric specification documentation must be more systematic than it often has been. A verbal instruction to the upholsterer or a purchase order without fire certification reference is no longer adequate for projects subject to the Act. The fire test certificate must be obtained before installation, referenced in the specification document, and retained as part of the project file.

For full guidance on obtaining fire test certificates and what they must cover, see our Crib 5 guide, our hotel fabric specification guide, and our FR treatment guide.

The Principal Designer Role and Interior Design Services

The RIBA/BIID professional services contracts — updated in their 2024 amendments — include an expanded schedule of services that now explicitly references the Principal Designer role under Part 2A of the Building Regulations. An interior designer or architect carrying interior design services within their scope on a qualifying project may be asked to act as, or contribute to the duties of, the Principal Designer.

The 2024 amendment to the RIBA/BIID contracts draws specific attention to the requirement for the designer to assess their competency to undertake the Principal Designer role before accepting it. Interior designers whose practice includes projects in higher-risk buildings should assess whether their competence in fire safety, structural safety, and the golden thread documentation requirements meets the standard required by PAS 8671, the publicly available specification setting out the minimum competence requirements for Principal Designers.

The Golden Thread and Fabric Documentation

The golden thread is a digitally maintained record of design decisions relating to fire safety and structural integrity. For fabric specification in a higher-risk building, it should contain the following for each fire-safety-relevant fabric decision. The fabric description — supplier, range name, colourway, width, and fibre composition. The fire standard the fabric is certified against — BS 7176 Medium or High Hazard, BS 5867 Part 2 Type B or C, or equivalent. The test certificate reference number and the name of the UKAS-accredited laboratory that issued it. The filling and interliner specified with the fabric, as the certificate covers the assembly rather than the face fabric alone. The date of installation and the location within the building. Any re-treatment or re-certification requirement and the recommended review date.

Building this documentation into the fabric specification process at Stage 3 of the RIBA Plan of Work — when specific fabrics are selected and technical data sheets are obtained — adds minimal time and significantly strengthens both legal compliance and the designer’s professional liability position. For guidance on fabric decisions at each RIBA stage, see our RIBA Plan of Work fabric guide.

Liability and the 30-Year Limitation Period

A 2025 Supreme Court ruling in URS Corporation Ltd v BDW Trading Ltd interpreted section 135(3) of the Building Safety Act to extend the limitation period for negligence claims relating to building safety from six to thirty years, including retrospective claims. This means that design decisions made today — including fabric specification decisions that affect fire safety in higher-risk buildings — could be subject to legal challenge for up to thirty years.

The practical implication for fabric specifiers is that the documentation of fire compliance at the time of specification — the fire test certificate, the specification schedule, the installation record — is evidence of due diligence that may need to be relied upon many years after practical completion. Maintaining systematic records of fire certification for all higher-risk building fabric specification decisions is strongly advisable.

What Interior Designers Should Do

Review your specification documentation process and confirm that it captures fire test certificate references, UKAS-accredited laboratory names, and filling and interliner details for every fabric specified in a fire-safety-relevant position. This applies to all contract projects, not only those classified as higher-risk buildings.

For any project that may involve an HRB — a residential building of seven or more storeys or 18 metres or more in height — seek advice from the Principal Designer appointed on the project about what fabric documentation is required as part of the golden thread. If you are the party being asked to act as Principal Designer, assess your competence against PAS 8671 before accepting the role.

Ensure your professional indemnity insurance covers the scope of design services you are providing on BSA-affected projects. The Act has introduced new and more extensive liabilities for designers, and cover that was adequate before 1 October 2023 may need to be reviewed.

When specifying fabric for fire-safety-relevant positions in higher-risk buildings, prefer inherently fire-resistant fabrics over those requiring topical FR treatment. Inherent fire resistance does not degrade with cleaning or over time and does not require re-certification during the building’s life. See our FR treatment and fibre compatibility guide for guidance on which fabrics carry inherent certification.

Quick answers

Does the Building Safety Act apply to all interior design projects?
The duty-holder framework applies to all projects requiring building control approval in England where there is more than one contractor, from 1 October 2023. The additional and most stringent requirements apply to higher-risk buildings — residential buildings of at least 18 metres in height or at least seven storeys containing two or more residential units. Most interior refurbishment projects of individual apartments do not require building control approval and are not directly caught by the Act. Commercial fit-outs, whole-building refurbishments, and new build projects with residential use at seven or more storeys are more likely to be affected.

What fire standards apply to fabric in higher-risk buildings?
The Building Safety Act does not introduce new fire standards for fabrics. The applicable standards remain BS 7176 for upholstered seating, BS 5867 for curtains, and the Regulatory Reform (Fire Safety) Order 2005 for the responsible person’s ongoing fire safety obligations. What the Act changes is the documentation and accountability requirements around compliance with those standards — specifically the requirement to maintain a golden thread of fire safety design decisions for higher-risk buildings.

What is the golden thread and what fabric information does it need to contain?
The golden thread is a digitally maintained record of design decisions relating to fire safety and structural integrity. For fabric specification in a higher-risk building, it should contain the fabric description, the fire certification standard and certificate reference, the UKAS-accredited laboratory name, the filling and interliner details, the date and location of installation, and any re-treatment requirements. This information must be maintained for the life of the building.

Can an interior designer be the Principal Designer under the Building Safety Act?
Yes, if they have the necessary competence as defined by PAS 8671. An interior designer appointed as lead designer on a project with more than one contractor must assess whether their competence in fire safety, structural safety, and documentation management meets the standard required. For HRB projects, the competence requirements are more demanding and formal competence assessment against PAS 8671 is advisable before accepting the appointment.

For fire certification standards and test certificates, see our Crib 5 guide. For fabric documentation at each RIBA Plan of Work stage, see our RIBA Plan of Work fabric guide. For FR treatment and inherent fire resistance, see our FR treatment and fibre compatibility guide.

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