Mohair Thermal Properties: Why It Works in Hotels Year-Round

The key property: Mohair fibre is hollow at the microscopic level, trapping air and providing insulation without the bulk associated with wool.
The practical result: Mohair feels warm to the touch but does not cause overheating in sustained use — it regulates temperature rather than simply retaining heat.
Moisture management: Mohair absorbs up to 30% of its weight in moisture vapour before feeling damp, making it comfortable across a wide range of humidity conditions.
Why it works in hospitality: The combination of thermal regulation and moisture management makes mohair velvet comfortable across seasons and climates without the seasonal specification limitations of most upholstery fabrics.

Most upholstery fabric discussions focus on durability, fire rating, and cleaning compatibility. The thermal and moisture management properties of mohair velvet are less frequently discussed but are commercially significant in hospitality environments where guests sit for extended periods across a wide range of ambient temperatures and humidity levels. This guide explains the physical mechanism behind mohair’s thermal performance, how it compares to other upholstery fibres, and why these properties support specification in hotel and hospitality environments year-round.

The Hollow Fibre Structure

Mohair fibre — the hair of the Angora goat — has a medullated structure. The fibre contains a medulla, a cellular core that runs through the centre of the fibre and creates air-filled spaces within the fibre itself. This hollow structure traps air within the fibre rather than just between fibres as in a conventional yarn. Trapped air is an excellent insulator: it reduces the rate at which heat is conducted away from the body.

The result is a fibre that provides warmth without the density and bulk required by other fibres to achieve the same insulating effect. A mohair velvet achieves its thermal character at a lower pile weight than a wool velvet of equivalent warmth performance. This is commercially relevant in upholstery because it means a warmer fabric without the added weight that can make a piece feel heavy or overbuilt.

Temperature Regulation Rather Than Heat Retention

The distinction between a fabric that retains heat and one that regulates temperature matters for extended seating use. A fabric that simply retains heat will feel warm initially but cause discomfort in sustained contact as body heat accumulates at the fabric surface and cannot dissipate. This is the mechanism behind the stickiness associated with non-breathable synthetic upholstery in warm environments.

Mohair velvet regulates rather than simply retains. The hollow fibre structure and the natural protein composition of mohair allow the fibre to respond to changes in body temperature and humidity. When the body produces more heat and moisture, the fabric absorbs moisture vapour from the skin and the warmer air near the body surface can circulate through the pile structure. When conditions cool, the absorbed moisture is released and the fibre’s insulating properties provide warmth.

This active thermal behaviour is described in textile science as hygroscopic regulation — the fibre’s ability to absorb and release moisture in response to environmental conditions moderates the microclimate between the body and the fabric surface. It is the same mechanism that makes wool and cashmere comfortable across a wider temperature range than synthetic fibres of equivalent weight.

Moisture Management

Mohair can absorb up to approximately 30% of its own dry weight in moisture vapour before the surface of the fibre begins to feel damp to the touch. This high moisture absorption capacity means that perspiration from guests sitting for extended periods is absorbed by the fibre and held within the fibre structure rather than remaining at the fabric surface. The fabric surface continues to feel dry even as the fibre absorbs moisture.

The absorbed moisture is subsequently released as the ambient conditions change — when the guest leaves and the seat is unoccupied, or when the ambient temperature drops — restoring the fabric to its dry state without the need for active drying or cleaning. This self-refreshing behaviour is a practical advantage in hospitality environments where upholstery is in continuous use throughout the day and cannot be dried between seatings.

The moisture absorption also generates a small amount of heat — a property known as heat of sorption — which contributes to the warm sensation associated with wool and mohair in cooler conditions.

Comparison with Other Upholstery Fibres

Cotton and linen are cellulosic fibres with good moisture absorption but no hollow fibre structure. They absorb moisture well but do not provide the same insulating warmth as mohair. A cotton velvet feels cooler to first touch than mohair of equivalent pile weight.

Polyester and other synthetic fibres have very low moisture absorption — typically below 1% of their dry weight. Synthetic upholstery fabrics do not absorb perspiration; it remains at the fabric surface and evaporates slowly, producing the clammy sensation associated with synthetic seating in warm environments. In cool conditions, synthetic fabrics feel cold to first touch because they conduct heat away from the body rapidly.

Faux leather — PVC and PU — has negligible breathability or moisture absorption. It is comfortable for short contact periods but in extended seating in warm conditions the lack of moisture management becomes uncomfortable, a practical consideration where guests may sit for two to three hours.

Why This Supports Year-Round Hospitality Specification

A hotel lobby, bar, or restaurant operates across a wide range of seasonal temperatures. In winter, guests arrive from cold outdoor conditions and the ambient temperature is maintained at 20 to 22 degrees Celsius. In summer, the ambient temperature may be similar but guests arrive warm. The thermal and moisture management demands on the upholstery fabric are very different across these conditions.

Mohair velvet performs well in both conditions because its thermal regulation is active rather than passive. The hollow fibre provides insulation in cool conditions. The moisture absorption capacity prevents surface dampness in warm conditions. The pile structure allows some air circulation through the fabric in warm conditions while maintaining pile density and pile recovery in cool conditions. The result is a fabric that does not need to be specified differently for summer and winter.

Frequently Asked Questions

Why does mohair feel warm?

Mohair fibre has a medullated hollow core that traps air within the fibre itself, providing insulation without requiring the bulk of denser fibres. The protein structure of mohair also generates a small amount of heat when it absorbs moisture — a property called heat of sorption — which contributes to the warm sensation on first contact. Unlike synthetic fibres, which conduct heat away from the body rapidly and feel cold to first touch, mohair conducts heat more slowly and feels immediately warm.

Does mohair velvet become uncomfortable in warm weather?

No. Mohair can absorb up to approximately 30% of its weight in moisture vapour before the surface feels damp. In warm conditions, perspiration from guests is absorbed into the fibre and held away from the skin surface, keeping the fabric surface dry. In sustained warm-weather use, mohair remains more comfortable than non-breathable synthetic alternatives.

Is mohair velvet suitable for restaurant seating where guests sit for long periods?

Yes, provided the Martindale rub count and fire certification meet the requirements of the specific environment. The thermal and moisture management properties of mohair are well-suited to extended seating use. For restaurant seating Martindale thresholds, see our hotel fabric specification guide.

For mohair velvet specification data including Martindale rub counts, fire ratings, and colourways, see the mohair velvet upholstery page. For velvet type comparisons, see our velvet types compared guide. For fabric hand and tactile properties, see our fabric hand guide.

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Faux Leather Types Compared: PVC, PU and Silicone Leather for Interior Designers

Most durable for contract use: PVC — highest abrasion resistance, best chemical resistance, inherently suited to Crib 5 certification
Softest handle: PU — closer to genuine leather in feel, better breathability, lower abrasion resistance than PVC
Best for marine, healthcare, and outdoor: Silicone leather — inherently flame resistant, UV stable, no plasticisers, widest temperature range
Kothea range: Faux Leather 3 is PVC — 100,000+ Martindale, Crib 5, wipe-clean, 140cm wide

Faux leather is not a single material. The term covers three structurally distinct product types — PVC, PU, and silicone leather — each with different performance profiles, fire characteristics, cleaning requirements, and environmental credentials. Specifying between them on the basis of appearance alone is the most common error in faux leather selection. This guide explains the differences that matter for a professional specification.

For background on Martindale rub counts referenced throughout this guide, see our Martindale rub test guide. For fire standards, see our Crib 5 guide and, for marine projects, our IMO marine fire standards guide.

What All Three Have in Common

PVC, PU, and silicone leather are all coated fabrics. They consist of a woven or knitted textile backing, typically polyester, to which a polymer coating is applied to create a surface that resembles leather. The backing provides tensile strength, dimensional stability, and the base for the coating to adhere to. The coating determines the surface properties: appearance, feel, stain resistance, fire behaviour, UV resistance, and cleaning compatibility.

All three can be produced in a wide range of colours and surface textures. All three are sold by the metre without the hide-size limitations of genuine leather. All three are easier to specify consistently across large projects than genuine leather, where dye lot and grain variation between hides is unavoidable. None requires the animal welfare considerations associated with genuine leather.

Beyond these shared characteristics, the three types diverge significantly in performance, sustainability, and appropriate application.

PVC Leather (Polyvinyl Chloride)

PVC leather is the most widely used faux leather in UK contract interiors. It consists of a PVC polymer paste coating applied over a polyester backing. The structure is dense and impermeable, with no open pores in the surface coating. This is what gives PVC leather its characteristic durability, stain resistance, and ease of cleaning.

Durability. PVC leather achieves the highest abrasion resistance of any faux leather type. High-specification PVC ranges routinely exceed 100,000 Martindale rubs. The dense multi-layer structure resists surface wear better than PU at equivalent price points. This makes PVC the default choice for hotel restaurant seating, bar stools, transport upholstery, and any application where the fabric will receive sustained and continuous contact.

Fire rating. PVC contains inherent fire-resistant properties due to its high chlorine content. A correctly formulated PVC faux leather can achieve BS 5852 Crib 5 certification without backcoating, though the specific compound formulation and any foam used in a composite test must be confirmed by an independent test certificate. PVC faux leather is among the most readily Crib 5-certifiable upholstery materials available.

Cleaning and chemical resistance. PVC resists water, alcohol, disinfectants, and most common cleaning agents. The impermeable surface can be wiped clean between uses without specialist products. This is the property that makes PVC faux leather the standard choice for healthcare environments, food and beverage seating, and any application where contamination is a practical concern. Confirm compatibility between specific cleaning agents and the specific product before specifying for environments using industrial or hospital-grade disinfectants.

Light fastness. PVC has good inherent UV resistance, typically achieving ISO 105-B02 grade 6 or above in mid and dark colourways. This is significantly better than most natural-fibre upholstery fabrics and makes PVC suitable for south-facing rooms and high-light environments where natural fabrics would require careful colourway selection.

Handle and breathability. PVC leather is the least breathable of the three types. In sustained contact, particularly in warm environments, the impermeable surface can feel warm or sticky. This is rarely a significant factor for seating used in short intervals — restaurant chairs, bar stools, meeting room chairs — but is relevant for seating used for extended periods, such as office chairs or long-haul transport seating where PU may be preferred.

Environmental profile. PVC has the highest environmental cost of the three types. The chlorine-based polymer produces dioxin compounds during manufacture and at end of life. PVC is difficult to recycle due to its mixed material composition. Many high-specification PVC faux leathers now use phthalate-free plasticiser formulations in response to EU REACH regulations, which address the most significant health concerns, but the underlying polymer chemistry remains a legitimate sustainability concern.

Cost position. Mid-range. High-specification PVC faux leather offering 100,000+ Martindale rubs and Crib 5 certification is competitively priced relative to the performance it delivers. It is typically less expensive than equivalent-performing PU microfibre or silicone leather.

Best for: Hotel restaurant and bar seating, healthcare upholstery, transport seating, high-traffic contract environments, marine exterior seating, headboards in hotel bedrooms, wall panelling in food and beverage environments.

Not recommended for: Extended-contact seating in warm environments where breathability matters. Projects with strict environmental sustainability requirements. Applications requiring inherent flame resistance without reliance on PVC chemistry.

PU Leather (Polyurethane)

PU leather consists of a polyurethane coating applied over a textile backing, typically a cotton or polyester base. The polyurethane surface is softer, more flexible, and more breathable than PVC, and produces a finish that more closely resembles genuine leather in handle and drape.

Durability. Standard PU leather achieves 30,000 to 80,000 Martindale rubs depending on construction and grade. High-specification PU microfibre products, where the PU coating is applied to a microfibre non-woven backing, can exceed 100,000 rubs and approach PVC performance. However, at equivalent price points, PVC typically outperforms standard PU in abrasion resistance. PU is also more susceptible to degradation from hydrolysis — the breakdown of the polymer by moisture and humidity over time — particularly in warm, humid environments. This is the primary cause of the peeling and surface delamination seen in lower-grade PU after two to three years of use.

Fire rating. PU does not have the inherent fire resistance of PVC. PU faux leather typically requires a fire-retardant additive or backcoating to achieve BS 5852 Crib 5 certification. The treatment adds cost and affects lead time. Always confirm the Crib 5 certification method with the supplier — whether inherent to the formulation or applied — and request the independent test certificate.

Cleaning and chemical resistance. PU leather is water-resistant but less resistant to solvents and alcohol than PVC. The micro-surface of PU is more prone to absorbing certain staining agents over time. PU is generally not recommended for environments where strong disinfectants are used routinely. Confirm the specific cleaning regime with the supplier before specifying for healthcare or high-frequency cleaning environments.

Light fastness. PU achieves good light fastness — typically ISO 105-B02 grade 5 to 6 — though slightly lower than PVC in most cases. Standard PU is not recommended for outdoor use. High-specification PU microfibre designed for automotive applications achieves better UV performance, but standard contract PU faux leather should be confirmed for light fastness before specifying in south-facing or high-light environments.

Handle and breathability. PU is softer and more breathable than PVC. In extended seating use it is more comfortable and does not produce the warm or sticky sensation associated with PVC in warm conditions. For office seating, residential-specification seating in hospitality environments, and any application where extended contact comfort matters, PU offers a noticeably better tactile experience.

Environmental profile. PU is more environmentally benign than PVC in manufacture and disposal. It does not contain chlorine and does not produce dioxins. Some PU products use water-based polyurethane systems, which significantly reduce VOC emissions during manufacture. PU is the more sustainable choice between PVC and PU for projects with environmental requirements, though silicone leather goes further on most sustainability measures.

Cost position. Mid to high. Standard PU faux leather is broadly comparable to PVC. High-specification PU microfibre products are premium priced.

Best for: Luxury residential specification where genuine leather handle is desired without the maintenance requirements. Boutique hotel seating where tactile quality is a client priority. Office seating where extended contact comfort matters. Environments where PVC sustainability concerns are commercially relevant.

Not recommended for: High-humidity environments where hydrolysis degradation is a risk. Environments requiring regular disinfectant cleaning. Heavy contract seating where maximum abrasion resistance is the priority. Marine exterior use.

Silicone Leather

Silicone leather is a coated fabric where the coating is a silicone resin rather than a PVC or PU polymer. It is the newest of the three types in commercial interior use and commands a significant price premium. Its performance profile is distinctive enough to make it the correct specification in a specific set of applications.

Durability. Silicone leather achieves high abrasion resistance — 100,000 Martindale rubs and above — and is resistant to UV degradation, extreme temperatures, and chemical exposure in ways that PVC and PU cannot match. The silicone polymer does not break down under UV light, maintains flexibility at low temperatures where PVC may crack, and remains stable at high temperatures. This makes it the correct specification for outdoor and semi-outdoor use, and for environments with extreme temperature or UV exposure.

Fire rating. Silicone is inherently flame resistant. The polymer structure does not require plasticisers or fire-retardant additives to achieve fire resistance. This inherent property survives cleaning and does not degrade over the life of the fabric. For applications where fire certification must survive aggressive cleaning regimes — healthcare, public transport, marine interiors — the inherent nature of silicone’s fire resistance is a significant specification advantage.

Cleaning and chemical resistance. Silicone leather has the best chemical resistance of the three types. Its low surface tension makes it inherently stain-resistant and resistant to oils, solvents, disinfectants, and most common cleaning agents. Hospital-grade disinfectants, bleach solutions, and alcohol-based cleaners that would degrade PU and may affect certain PVC formulations over time can be used on silicone leather without surface damage.

Light fastness. Silicone leather offers the best UV resistance of the three types. The polymer structure does not degrade under UV exposure in the way that PVC and PU can over time. Silicone leather is the correct specification for outdoor seating, terraces, poolside furniture, and marine exterior cushions exposed to sustained sunlight.

Handle and breathability. High-quality silicone leather has a distinctive soft, smooth handle that is different from both PVC and PU. It does not have the rigidity or warmth-retention of PVC, and its surface does not develop the micro-cracking associated with ageing PU. The handle is a matter of preference but it does not closely approximate genuine leather in the way that high-grade PU can.

Environmental profile. Silicone is derived from silica, a naturally occurring mineral. The manufacturing process uses no solvents, produces low VOC emissions, and no dioxins or phthalates. Silicone does not break down into microplastics. It can be downcycled at end of life. Silicone leather is the most environmentally responsible of the three types by most measures, and its environmental credentials are defensible to a degree that PVC and standard PU are not.

Cost position. High. Silicone leather commands a significant premium over PVC and PU. For most standard contract applications where PVC would perform adequately, the premium is not justified by the performance advantage. Where the specific properties of silicone — UV stability, temperature range, chemical resistance, inherent flame resistance — are genuinely required, the cost is appropriate.

Best for: Outdoor and semi-outdoor seating exposed to UV and weather. Marine interior seating on commercial and charter vessels where IMO certification is required and inherent flame resistance is an advantage. Healthcare environments requiring aggressive chemical cleaning with inherent fire resistance. High-end residential projects where sustainability credentials are a client requirement.

Not recommended for: Standard contract interiors where PVC delivers equivalent performance at lower cost. Any project where budget is a primary constraint.

Comparison at a Glance

Martindale rub count: PVC high-specification 100,000+; PU standard 30,000 to 80,000, PU microfibre 100,000+; silicone 100,000+.

Fire certification: PVC can achieve Crib 5 inherently; PU typically requires FR additive or backcoating; silicone is inherently flame resistant.

Cleaning compatibility: PVC excellent with most agents; PU good with mild products, caution with solvents; silicone excellent with all agents including hospital-grade disinfectants.

UV resistance: PVC good, grade 6+; PU moderate, grade 5 to 6; silicone excellent, stable under extended UV exposure.

Breathability: PVC low; PU moderate; silicone moderate.

Environmental profile: PVC highest impact, chlorine-based; PU moderate, better than PVC; silicone lowest impact, no solvents or plasticisers.

Cost relative to performance: PVC best value for standard contract use; PU best value where handle and breathability matter; silicone justified where its specific properties are genuinely required.

Kothea Faux Leather

Kothea’s Faux Leather 3 is a high-specification PVC faux leather achieving in excess of 100,000 Martindale rubs with a Crib 5 fire rating. It is 140cm wide, available in over 20 colourways, and carries a wipe-clean surface compatible with water-based hotel and contract cleaning products. It is the correct specification for hotel restaurant and bar seating, headboards, wall panelling, and high-traffic contract upholstery where maximum durability, fire certification, and cleaning compatibility are the primary requirements.

For hotel and hospitality specification guidance including Martindale thresholds by room type, see our hotel fabric specification guide. For marine projects requiring IMO certification, see our IMO marine fire standards guide.

Frequently Asked Questions

What is the difference between PVC and PU faux leather?

PVC faux leather uses a polyvinyl chloride coating and has the highest abrasion resistance, best chemical resistance, and most readily achievable Crib 5 fire rating of any faux leather type. PU faux leather uses a polyurethane coating and is softer, more breathable, and more environmentally responsible than PVC, but typically achieves lower abrasion resistance at equivalent price points and requires FR treatment to achieve Crib 5. PVC is the standard choice for heavy contract use. PU is preferred where tactile quality and breathability matter more than maximum durability.

What is silicone leather and when should I specify it?

Silicone leather is a coated fabric where the surface coating is silicone resin rather than PVC or PU. It is inherently flame resistant, UV stable, resistant to extreme temperatures, and compatible with hospital-grade cleaning agents. It commands a significant price premium over PVC and PU and is the correct specification for outdoor and semi-outdoor seating, marine interiors, healthcare environments requiring aggressive chemical cleaning, and high-end projects where environmental sustainability is a client requirement. For most standard contract interiors, PVC delivers equivalent or superior performance at lower cost.

Which faux leather is most durable for hotel use?

High-specification PVC faux leather is the most durable and most practically suited to hotel use. It achieves 100,000+ Martindale rubs, can be Crib 5 certified, and is compatible with the water-based and alkaline cleaning products used in hotel housekeeping. PU leather at equivalent price points achieves lower abrasion resistance and is less resistant to the cleaning chemicals used in hotel environments. For hotel restaurant seating, bar stools, and headboards, PVC is the default specification. See our hotel fabric specification guide for Martindale thresholds by room type.

Is PVC faux leather suitable for marine use?

PVC faux leather is suitable for marine use subject to fire certification. For private yachts, a Crib 5 certificate is typically sufficient. For commercial charter vessels under the MCA Large Commercial Yacht Code, the fabric must hold an IMO FTP Code Part 8 certificate obtained from an IMO-approved laboratory. A Crib 5 certificate does not substitute for an IMO Part 8 certificate on commercial vessels. PVC is well suited to marine environments in terms of moisture resistance, UV stability, and cleaning compatibility. Silicone leather offers superior UV and temperature performance for exterior marine applications. See our IMO marine fire standards guide for full detail.

Does faux leather fade in sunlight?

PVC faux leather typically achieves ISO 105-B02 grade 6 or above and is suitable for most residential and contract environments including south-facing rooms. PU achieves grade 5 to 6 and should be confirmed for high-light environments. Silicone leather is the most UV stable of the three types and is the correct specification for outdoor or sustained direct-sunlight applications. For full guidance on light fastness grades and room orientation, see our light fastness guide.

Is PU leather better than PVC for sustainability?

PU is more environmentally responsible than PVC in manufacture and disposal. PVC production uses chlorine-based chemistry that produces dioxin compounds. PU does not contain chlorine and some PU products use water-based systems that further reduce environmental impact. Silicone leather has the best environmental profile of the three types — it is derived from silica, uses no solvents in manufacture, produces no dioxins or phthalates, and does not break down into microplastics. For projects where environmental credentials are a priority, PU offers a better position than PVC, and silicone leather offers the most defensible environmental specification.

For healthcare fabric specification including silicone leather and healthcare-grade PVC, see our healthcare fabric guide. For when to use faux leather instead of velvet, see our when not to use velvet guide.

For faux leather specification in outdoor terraces and semi-outdoor hospitality environments, see our outdoor terrace fabric specification guide.

For Building Safety Act 2022 documentation requirements for fabric in higher-risk buildings, see our Building Safety Act guide.

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Tag: hotel upholstery