How Much Fabric to Upholster Furniture: Estimates by Type

Estimating how much fabric a piece of furniture needs is one of the most common calculations in a specification, and one of the easiest to get wrong. This guide gives working estimates by furniture type in metres, explains the variables that change them, and shows how to add the pattern-repeat allowance. For pattern matching and repeat calculation, see our pattern matching guide.


Estimates by Furniture Type

These are working estimates for plain fabric on a standard piece, based on a 140 cm wide fabric. They are starting points for budgeting and initial ordering, not a substitute for the upholsterer’s measured calculation on the specific frame.

PiecePlain fabric estimate (140 cm wide)
Dining chair, seat only0.5 to 0.75 m
Dining chair, seat and back1.5 to 2 m
Occasional or accent chair2.5 to 4 m
Armchair5 to 7 m
Wing chair6 to 8 m
Two-seat sofa10 to 14 m
Three-seat sofa14 to 18 m
Large or corner sofa18 to 25 m
Headboard, single2 to 3 m
Headboard, king3 to 4.5 m
Ottoman or footstool1.5 to 3 m

What Changes the Estimate

Several variables move the figure up from the base estimate, sometimes substantially. Fabric width is the first: the estimates above assume 140 cm. A narrower fabric, such as 130 cm, needs proportionally more length, and a very narrow fabric changes the cutting plan entirely. Pattern repeat is the second and largest: a patterned fabric needs extra length to align the repeat across panels, added on top of the plain estimate. A directional fabric or one with a pile that must run the same way on every panel, such as velvet, restricts how pieces can be cut and raises the quantity. Deep buttoning, pleating, valances, and contrast piping all add fabric. Loose covers need more than tight upholstery because of tuck-ins and hems.


Adding the Pattern Repeat

The estimates above are for plain fabric. For a patterned fabric, add the repeat allowance on top: one full vertical repeat per cut length for a straight match, one and a half vertical repeats per cut length for a half drop. On a large-scale repeat this can add a significant proportion to the plain figure. The full method, with worked examples, is in our pattern matching guide.


The Rule That Prevents Shortfalls

Always have the upholsterer confirm the measured quantity against the specific frame before the fabric is ordered, and order the full quantity in one dye lot. A job that runs short mid-way needs a fresh order from a potentially different dye lot, which risks a visible colour difference and a programme delay. For dye lot management on larger orders, see our lead times and custom colour matching guide. For the full specification library organised by environment, application, and performance need, see our fabric buying guide by purpose.


Quick answers

How much fabric do I need to reupholster a sofa?
As a working estimate on 140 cm wide plain fabric, allow 10 to 14 metres for a two-seat sofa, 14 to 18 metres for a three-seat sofa, and 18 to 25 metres for a large or corner sofa. These are starting points for budgeting. A patterned fabric needs more to align the repeat, and a directional or pile fabric such as velvet needs more because of cutting restrictions. Always have the upholsterer confirm the measured quantity against the specific frame before ordering.


How much fabric to upholster a dining chair?
For a drop-in or fixed seat only, allow 0.5 to 0.75 metres of 140 cm wide plain fabric per chair. For a chair with an upholstered seat and back, allow 1.5 to 2 metres. Add a pattern-repeat allowance for patterned fabric, and order all chairs in a set from a single dye lot to avoid colour variation between them.


Why does a patterned fabric need more than a plain one?
A patterned fabric must be cut so the repeat aligns across every panel and seam, which means each cut length starts at the same point in the repeat and the fabric between those points is waste. Add one full vertical repeat per cut length for a straight match and one and a half for a half drop. On a large-scale repeat this can add a substantial proportion to the plain estimate.


To request cuttings before committing an order, visit KOTHEA.com/cuttings.

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Mohair Velvet vs Cotton Velvet: Which to Specify

Blue Velvet Chair

Mohair velvet and cotton velvet are the two natural-fibre velvets a UK designer chooses between most often. They look similar on a moodboard and perform very differently in a specification. This guide compares them across durability, fire rating, cleaning, appearance, and cost. For the full range of velvet fibres, see our velvet types guide.


The Core Difference

Mohair velvet has its pile woven from the hair of the Angora goat, a long, smooth, lustrous fibre of exceptional tensile strength. Cotton velvet has its pile woven from cotton, a shorter cellulose fibre. That fibre difference drives every specification distinction that follows: mohair is far more durable, carries an inherent fire rating, and has a directional sheen; cotton is softer in cost, matte in appearance, and needs treatment for contract fire compliance.


Comparison by Specification Measure

MeasureMohair velvetCotton velvet
FibreAngora goat hairCotton
Martindale rub count80,000 to 100,000 and above20,000 to 60,000 depending on construction
Fire ratingInherent BS 5852 Crib 5 in correctly certified ranges, no treatment neededNot inherent; topical FR treatment required for contract use
Cleaning codeS (solvent only)S or WS depending on range and treatment
AppearanceHigh lustre with directional sheen and depth of colourMatte to semi-matte, no directional sheen
SuitabilityHeavy contract and residential upholsteryDomestic upholstery, cushions, curtains, headboards
CostPremiumMid-range, plus FR treatment cost for contract use

Which to Specify

For heavy contract upholstery in hotels, restaurants, bars, and hospitality seating, mohair velvet is the sounder specification. It reaches 80,000 to 100,000 Martindale rubs, carries an inherent Crib 5 fire rating in correctly certified ranges without the cost or handle change of topical treatment, and its directional sheen gives the depth of colour associated with luxury upholstery. Confirm the inherent Crib 5 pass with an independent certificate for the specific range.

For domestic upholstery, cushions, curtains, and headboards where budget matters and use is lighter, cotton velvet is a sound mid-range choice. A well-constructed heavyweight cotton velvet reaches sufficient durability for general domestic and light contract use, but it needs topical FR treatment for any contract environment, which adds cost and can flatten the pile. Always confirm the specific Martindale figure, since cotton velvet quality varies widely.

For the fire treatment implications, see our Crib 5 guide. For durability figures, see our Martindale rub test guide. For the full specification library organised by environment, application, and performance need, see our fabric buying guide by purpose.


Quick answers

What is the difference between mohair velvet and cotton velvet?
Mohair velvet has its pile woven from Angora goat hair and reaches 80,000 to 100,000 Martindale rubs with an inherent Crib 5 fire rating in correctly certified ranges. Cotton velvet has its pile woven from cotton, reaches 20,000 to 60,000 Martindale rubs depending on construction, and needs topical FR treatment for contract use. Mohair has a directional sheen and depth of colour that cotton velvet does not replicate.


Is mohair velvet worth the extra cost over cotton velvet?
For heavy contract use, yes. Mohair velvet reaches far higher abrasion figures, carries an inherent Crib 5 fire rating without the cost and handle change of topical treatment, and lasts longer in daily multi-user settings. For lighter domestic use where budget matters, cotton velvet is a sound choice at lower cost, provided its Martindale figure suits the application and FR treatment is added where contract fire compliance is required.


Which velvet is more durable, mohair or cotton?
Mohair velvet is more durable. It reaches 80,000 to 100,000 Martindale rubs against cotton velvet’s typical 20,000 to 60,000, and its long, strong Angora goat fibre resists crushing and wear better than cotton’s shorter fibre. Mohair is the more reliable natural-fibre velvet for contract upholstery.


To request cuttings of any KOTHEA velvet, visit KOTHEA.com/cuttings.

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PVC vs PU Leather: Which to Specify for Contract Upholstery

PVC and PU are the two synthetic leathers a UK specifier will meet most often, and they are not interchangeable. This guide compares them across the measures that decide a contract specification: abrasion, fire certification, cleaning, cold performance, and cost. For the wider comparison including silicone leather, see our faux leather types guide.


PVC and PU: The Core Difference

PVC (polyvinyl chloride) leather is built on a plasticised PVC layer over a textile backing. PU (polyurethane) leather is built on a polyurethane coating over a textile backing. The base polymer is the difference, and it drives almost every performance distinction that follows. PVC is the more robust and chemically resistant of the two. PU is softer, more breathable, and closer to the handle of real leather, but generally less durable over a long service life.


Comparison by Specification Measure

MeasurePVC leatherPU leather
Abrasion (Martindale)High; contract grades reach 100,000 and above, some over 200,000Moderate; typically lower than equivalent PVC, prone to surface peeling over time
HandleFirmer, can feel less naturalSofter, closer to real leather
BreathabilityLowHigher
Fire certificationReadily available with BS 5852 Crib 5Available but less commonly certified to Crib 5
CleaningWipe-clean, resistant to most cleaning agentsMore sensitive to solvents and prolonged moisture
Cold-crack performanceStandard PVC can stiffen and crack in cold; cold-resistant grades availableGenerally more flexible in cold, no plasticiser migration
LongevityLong service life in high-use contract settingsShorter; surface delamination is the common failure mode
CostMid-rangeMid-range, can be higher for premium grades

Which to Specify

For heavy contract upholstery in hotels, restaurants, bars, healthcare, and transport, PVC leather is usually the sounder specification. It reaches the highest abrasion figures, is readily certified to BS 5852 Crib 5, and wipes clean, which matters in high-turnover and infection-controlled settings. Confirm the cold-crack grade for any exterior or marine application, since standard PVC stiffens in cold.

For projects where handle and appearance are the priority and use is lighter, PU leather is the better choice. It feels closer to real leather and breathes better, which suits residential and boutique settings. The trade-off is service life: PU is more prone to surface peeling and delamination over years of heavy use, so it is less suited to the most demanding contract environments.

For cold-crack testing relevant to exterior and marine use, see our cold crack temperature testing guide. For the chemical safety and durability picture, see our faux leather sustainability guide. For the full specification library organised by environment, application, and performance need, see our fabric buying guide by purpose.


Quick answers

Is PVC or PU leather better for contract upholstery?
PVC leather is usually better for heavy contract upholstery. It reaches higher Martindale abrasion figures, is readily certified to BS 5852 Crib 5, and wipes clean, which suits hotels, healthcare, and transport. PU leather is better where handle and appearance matter more than service life, such as residential and boutique settings, but it is more prone to surface peeling over time.


What is the difference between PVC and PU leather?
PVC leather is built on a plasticised polyvinyl chloride layer and is more durable and chemically resistant. PU leather is built on a polyurethane coating and is softer, more breathable, and closer to the handle of real leather, but generally less durable. The base polymer is the difference and it drives their contrasting performance.


Does PU leather peel more than PVC?
PU leather is more prone to surface peeling and delamination over a long service life than PVC. This is the common failure mode for PU in heavy-use settings, which is why PVC is generally specified where durability over many years is the priority.


To request cuttings of any KOTHEA faux leather, visit KOTHEA.com/cuttings.

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When Not to Use Velvet — and What to Specify Instead

Black mohair velvet upholstery on a regal chair

When Not to Use Velvet — and What to Specify Instead

Velvet fails fastest in: High-UV environments, wet or humid conditions, applications requiring water-based cleaning, tight upholstery with sharp frame edges.
The most common misspecification: Cotton or synthetic velvet in a contract environment without Crib 5 certification, or any velvet in an outdoor or semi-outdoor setting.
What this guide covers: The specific applications and conditions where velvet is the wrong choice and what to specify instead for each scenario.

Velvet is one of the most commercially significant upholstery fabrics in the UK interior design market. It also generates more specification failures than almost any other fabric type. The failures are not caused by velvet being an inferior product — at its best, contract mohair velvet is among the most technically capable upholstery fabrics available. They are caused by velvet being specified in conditions for which it is structurally unsuitable. This guide is a frank account of when not to use velvet and what to choose instead.

For comparative performance data of different velvet types, see our velvet types compared guide.


Outdoor and Semi-Outdoor Environments

No natural-fibre velvet — mohair, cotton, linen, silk, cashmere — is suitable for outdoor or semi-outdoor use. The pile structure of velvet traps and retains moisture, which in outdoor conditions accelerates mould and mildew growth within the pile. UV exposure degrades natural fibre dyes at a much faster rate on outdoor velvet because the pile structure increases the surface area exposed to UV radiation relative to the fabric weight.

Semi-outdoor applications — covered terraces, glazed atriums with opening panels, poolside seating under a canopy — are equally problematic. The combination of occasional direct moisture exposure and sustained UV transmission produces conditions that natural-fibre velvet cannot tolerate.

Specify instead: Solution-dyed acrylic, high-specification outdoor polyester, or marine-grade PVC faux leather with UV stabilisers. See our IMO marine standards guide for marine and outdoor fabric guidance.


High-Humidity Environments

Velvet in sustained high-humidity conditions — spa changing rooms, pool surrounds, steam room lobbies — absorbs atmospheric moisture and does not dry quickly due to the density of the pile. Retained moisture in the pile base creates conditions for mould growth and accelerates deterioration of the backing structure.

Specify instead: PVC or silicone faux leather, both of which are non-absorbent and can be wiped dry. See our faux leather types compared guide.


Applications Requiring Regular Water-Based Cleaning

Most velvet carries a cleaning code of S — solvent-based dry cleaning only. Water applied to S-coded velvet causes watermarks and pile distortion that may be permanent. In any environment where the cleaning team applies water-based products to upholstered surfaces as standard — hotel bedrooms on standard cleaning schedules, restaurant seating cleaned between services with damp cloths, healthcare environments requiring wet disinfection — S-coded velvet is incompatible with the operational reality.

This is the most common operational failure with velvet in hospitality environments. The fabric is specified, installed, and cleaned incorrectly within the first week.

Specify instead: Confirm whether the specific velvet range carries a WS code rather than S. If water-based cleaning is unavoidable throughout the scheme, specify PVC faux leather for those positions and use velvet in areas — headboards, decorative cushions, low-use occasional seating — where the cleaning regime can be controlled.


South-Facing Rooms and High-Light Environments

Velvet in pale colourways in south-facing rooms will show fading faster than an equivalent flat-woven fabric. The pile structure presents a larger surface area to light than a flat weave of the same fibre and weight, accelerating photodegradation of the dye. For guidance on light fastness ratings and room orientation, see our light fastness and Blue Wool Scale guide.

Specify instead: Confirm the ISO 105-B02 grade for the specific colourway before ordering. For very high-light conditions, specify dark mohair velvet colourways or move to a flat-woven fabric in a light-fast colourway for the most exposed positions.


Tight Upholstery Over Sharp Frame Edges

Velvet pile is vulnerable at points where the fabric is pulled tightly over sharp frame edges — the corners of seat pads, the edges of dining chair backs. At these points the pile is subjected to sustained localised tension that gradually pulls fibres from the pile base, causing thinning and eventually pile loss. When specifying velvet for an upholstery project, ensure the furniture specification calls for appropriately softened frame edges at all contact points.

Specify instead: For furniture with unavoidably sharp frame edges, specify a flat-woven fabric in a comparable colour and weight. The absence of pile eliminates the pile-loss risk at edges entirely.


Healthcare Environments Requiring Disinfectant Cleaning

Healthcare environments use cleaning products — hypochlorite bleach solutions, quaternary ammonium compounds, alcohol-based disinfectants — that are incompatible with the cleaning codes of most velvet fabrics. The pile structure traps contaminants and cannot be cleaned to clinical standards.

Specify instead: Silicone leather for patient-contact seating in clinical environments. For full guidance, see our fabric for healthcare environments guide.


Budget-Constrained Projects Where Velvet Requires FR Treatment

Cotton, linen, and synthetic velvets that do not carry an inherent Crib 5 certification require FR treatment for contract use. The treatment adds cost, programme time, and introduces dye interaction risks in certain colourways. For a budget-constrained project, the total cost including treatment may exceed the cost of an alternative with inherent certification. See our dye types and FR treatment guide for the specific risks.

Specify instead: Mohair velvet with independently certified Crib 5 achieved without topical treatment eliminates the treatment cost, programme time, and dye risk entirely.


Quick answers

Can velvet be used outdoors?
No natural-fibre velvet is suitable for outdoor or semi-outdoor use. The pile structure retains moisture and the fibres degrade rapidly under UV exposure. For outdoor or covered terrace seating, specify solution-dyed acrylic or marine-grade PVC faux leather engineered for outdoor conditions.

Why does velvet watermark?
Water applied to velvet causes individual pile fibres to mat together in the wetted area as surface tension pulls fibres toward the water droplet. When the water evaporates, the fibres dry in this distorted position. The resulting mark is permanent in most natural-fibre velvets once dried. This is why most velvet carries a cleaning code of S.

Is any velvet suitable for areas that need water-based cleaning?
Some synthetic velvets carry a W or WS cleaning code and can be spot-cleaned with water-based products. Confirm the cleaning code on the specific range data sheet before specifying and test compatibility with the specific cleaning product before installation. No natural-fibre velvet should be specified where water-based cleaning will be applied routinely.

When is velvet the right choice despite its limitations?
Velvet is the right choice when its specific combination of properties — tactile quality, depth of colour, inherent Crib 5 for mohair, high Martindale count, and visual character — aligns with the project requirements and the operational environment is compatible with its care requirements. Hotel lobby seating, restaurant banquettes in dry controlled environments, residential sofas, headboards, cushions, and curtains in appropriate light conditions are all applications where correctly specified velvet performs excellently.


For velvet types and comparative performance, see our velvet types compared guide. For hotel velvet specification, see our hotel fabric specification guide. For alternatives in high-cleaning environments, see our faux leather types compared guide.

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Faux Leather For Flooring

Cream Faux Leather Upholstery
Black Faux Leather Upholstery
Black Faux Leather Upholstery

KOTHEA was asked if Faux Leather could be used as flooring. We have experience of putting faux leather just about on any surface: in yachts, in hotels, in villas, on doors, on walls, on bars and of course on furniture. But sadly no experience with floors.

Some of the faux leathers/faux skins we sell have a Martindale / Rub test of over 100,000. This is suitable for HEAVY/CONTRACT upholstery. However to extrapolate that to even light use flooring is risky. The rub test mimics more the action of sitting rather than being walked upon. The forces exerted by walking, running and carrying things on faux leather would be much more than in seating areas. This would be further complicated by the adhesive which would have to be both perfectly bonded throughout the entire area in contact with the floor (possible) and the adhesive would have to be strong (possible).

Having said that I have a sneaky feeling that it is possible in reasonably low traffic areas. After all it is possible to buy leather tiles. Perhaps also the covering applied after laying can improve stability and durability. If you would like me to give a more definitive response on this issue please leave a comment.

Knit Back Fabric Backing

Image via Wikipedia

Some fabrics can be too fragile for use as upholstery unless knit backed. Knit backing is a process whereby, for example, a cotton polyester backing is applied to a lighter weight chenille, silk or cotton.

Essentially the fabric‘s life is increased with better durability and resilience. The handling characteristics of the fabric can be improved; and knit backing also helps prevent seam slippage.

The same principle applies for the fabric whether or not it is to be used for either upholstery or wall covering. There will certainly be other requirements for contract usage, say, in hotels and aviation and also other treatments like fire retardancy or stain protection would be required for contract upholstery.

Fabric Treatment Companies – FR Flameproofing

We are often asked to recommend fabric treatment companies for flame retarding in contract installations. Most treatment companies offer other services such as; back coating fabric for walls and stain resistance/repellency. There are several such companies in the UK and at various times we have used all of the following:

Essex Flameproofing,

Textiles FR, and

TEK Treatments

Just click the company name to take you to their web site. Please feel free to add comments to this posting recommending any suppliers you have used but any negative comments about other companies are not permitted on this site. Thank you.

Shimmering Upholstery

White Textured Upholstery on Contemporary Chair
White Textured Upholstery on Contemporary Chair
White Textured Upholstery on Contemporary Chair

 

New for Spring 2015, striking and shimmering design beautifully upholstered on an occasional chair.