Upholstery Fabric Selection: Double Rubs and FR Compliance
Upholstery Fabric Selection: Double Rubs and FR Compliance
Upholstery fabric is sold on five numbers and bought on one. The five numbers travel with every fabric in the library; the one number is the number the buyer's specification team wrote into the clause. At Rosy Rose, where the upholstery cell sits beside the cutting and finishing lines in Foshan, we run the fabric library on the same numbers we run the test reports, because in our experience the fabric that comes back for warranty is the fabric whose five numbers were not all written into the clause. This guide is for hotel FF&E buyers, specifiers, importers and contract furniture distributors who want to specify fabric on the same numbers the factory tests.
The piece is written in the order a procurement team needs to read it: the five numbers, the FR regime by market, what the double-rub count does not tell you, the upholstery clause, the practical evaluation sequence, and the question to ask before signing off a fabric.
The FR Regime Depends on the Market, Not on Preference
Flame-resistance regulation is set by the destination market, not by the buyer's preference. Three regimes cover most of the contract furniture market:
| Regime | Market | Test |
|---|---|---|
| BS 5852 | UK, several Middle East markets | Cigarette and match ignition, with source of ignition in the fabric |
| CAL TB 117 | California, several US states | Cigarette and match ignition, on the foam-fabric composite |
| IMO | Marine and offshore | Cigarette, match and crib ignition |
A fabric that is FR-treated for one regime is not FR-treated for another. A fabric library that mixes regimes without naming the regime on the swatch is a library that the buyer cannot trust on tender.
Five Numbers Travel with Every Fabric
The five numbers that travel with every contract fabric:
- Abrasion (double rubs). Wyzenbeek or Martindale, depending on the test method.
- Fabric weight. Grams per square metre or ounces per linear yard.
- Composition. Percentage by fibre, with the back-coating named.
- FR class. The regime (BS 5852, CAL TB 117, IMO), the source-of-ignition result, and the back-coating system.
- Emission class. The VOC or indoor-air statement for the fabric and any back-coating.
| Number | What it tells you | Where it fails |
|---|---|---|
| Double rubs | Wear life under abrasion | Does not predict pilling, seam slippage, UV |
| Weight | Hand and durability | Heavy fabric on a thin foam fails differently |
| Composition | Cleaning and FR behaviour | Back-coated fabric behaves differently from inherent |
| FR class | Fire performance by regime | Regime mismatch is the usual failure |
| Emission class | Indoor air | Back-coating can dominate emissions |
A specification that names only the double-rub count is a specification that names one number out of five.
What a Double Rub Number Does Not Tell You
A double-rub count describes abrasion resistance only, under one method, on the fabric face. Two fabrics with the same double-rub count can perform differently on:
- Pilling. Some weaves pill at a fraction of their abrasion life.
- Seam slippage. A loose weave passes abrasion and fails at the seam.
- UV stability. A 100,000 double-rub fabric can fail in a sunlit lobby in two years.
- Stain resistance. A untreated fabric stains before it wears.
- FR back-coating. A back-coated fabric performs differently from an inherent FR fabric.
Across our 200,000㎡ base, the fabric shortlist for a hotel programme is built on all five numbers, not on the abrasion number alone, and the shortlist is reviewed at the area level, not the project level.
A double-rub count that names the method (Wyzenbeek or Martindale) is more useful than a count that names only the number, because the two methods do not return comparable results on the same fabric. A Wyzenbeek 80,000 fabric is not the same as a Martindale 80,000 fabric, and the test method belongs on the spec sheet, not only on the test report.
Writing the Upholstery Clause
The clause has six pieces of information per part number:
| Field | What it states | Example value |
|---|---|---|
| Fabric reference | Supplier and supplier code | Supplier X, code Y |
| Composition | Fibre percentages | 70% wool, 30% polyester |
| Weight | GSM or oz/lyd | 480 g/m² |
| Abrasion | Method and result | 80,000 double rubs, Wyzenbeek |
| FR class | Regime and result | BS 5852, crib 5 pass |
| Emission class | Indoor air statement | Indoor Air Comfort Gold |
A clause that names only the fabric reference and the colour leaves the composition, the abrasion method, the FR regime and the emission class on the table. In our experience at Rosy Rose, the upholstered item that fails the audit is the item whose clause named one or two of the six fields.
Practical Evaluation Sequence for a Fabric Library
A fabric library shortlist of three to five cloths is built in this order:
- Regime match. Every shortlisted cloth is matched to the destination market regime.
- Abrasion match. Every shortlisted cloth is matched to the area class (heavy, general, light).
- Composition match. Every shortlisted cloth is matched to the cleaning specification.
- Hand and appearance match. Every shortlisted cloth is reviewed on the actual frame.
- Cost match. Every shortlisted cloth is reviewed on the bulk cost.
In our experience, the library shortlist that goes through these five steps is the library shortlist that survives the mock-up room. The mock-up review is where the shortlisted cloths are reviewed on the actual frame, in the actual room light, against the actual hardware. A cloth that wins the shortlist on paper can lose the mock-up review on appearance, and a cloth that loses on paper can win on the frame.
Question to Ask Before Signing Off a Fabric
Three questions separate a fabric that performs from a fabric that merely passes the test report:
- What is the FR regime on the test report, and what is the regime on the destination market?
- What is the back-coating system, and is the emission class declared against the back-coated fabric or against the face fabric alone?
- What is the UV stability, and where is the fabric being used?
A fabric library that answers these three questions for every shortlisted cloth is a library that the buyer's tender can be priced against.
Send the Programme and the FR Regime
Send the furniture programme, the FR regime that applies and the double-rub target you need to Rosy Rose, and we will return a fabric library shortlist, the test matrix and a sample timeline sized to the FR class of each area. Look at the product programmes we build upholstery ranges around and the company profile for the upholstery cell on the same base.
Fabric is the specification line most likely to be changed late, and the one that most often voids a compliance file. Since 1983 we have kept approved fabric references on site so a substitution can be tested against the original before the bulk order opens.
Send the brief to WhatsApp +86 188 2788 2512 and we will reply with the library shortlist, the test matrix and the sample ladder sized to the FR class of each area.
FAQ
Can two fabrics with the same double rub count perform differently? Yes, and routinely. The count describes abrasion resistance only, under one method, on one machine. A 50,000 double rub fabric with weak seam slippage, poor pilling resistance or a cleaning code that forbids the chemicals your housekeeping team actually uses will fail earlier in service than a 30,000 rub fabric with a tight weave and a permissive cleaning schedule. Abrasion belongs in the specification alongside pilling, seam slippage, colourfastness and the cleaning code, never on its own.
What is the difference between inherently FR and back-coated FR upholstery? Inherently FR fabric gets its flame resistance from the fibre itself, so the performance is permanent and does not wash out. Back-coated fabric gets it from a chemical treatment applied to the reverse of the cloth, so the route depends on the coating staying intact through cleaning cycles. Barrier interliners are a third route: an FR barrier sits between the foam and the cover, and the cover itself carries no FR claim. Each route satisfies different test regimes, and each has different implications for cleaning and for re-upholstery.
Does the foam behind the fabric matter for FR compliance? It does in most test regimes. Cigarette and match-resistant tests commonly assess a composite of cover plus filling rather than the fabric alone, so switching the foam block or the interliner can invalidate an earlier report. On a re-upholstery programme, reusing the existing foam with new fabric without re-testing is one of the most common compliance gaps we see in project documentation.
Request a project quotation
Send drawings or a specification schedule for a factory-direct quotation. Our Foshan team replies with lead time, options and export packing details.
Frequently asked questions
Can two fabrics with the same double rub count perform differently?
Yes, and routinely. The count describes abrasion resistance only, under one method, on one machine. A 50,000 double rub fabric with weak seam slippage, poor pilling resistance or a cleaning code that forbids the chemicals your housekeeping team actually uses will fail earlier in service than a 30,000 rub fabric with a tight weave and a permissive cleaning schedule. Abrasion belongs in the specification alongside pilling, seam slippage, colourfastness and the cleaning code, never on its own.
What is the difference between inherently FR and back-coated FR upholstery?
Inherently FR fabric gets its flame resistance from the fibre itself, so the performance is permanent and does not wash out. Back-coated fabric gets it from a chemical treatment applied to the reverse of the cloth, so the route depends on the coating staying intact through cleaning cycles. Barrier interliners are a third route: an FR barrier sits between the foam and the cover, and the cover itself carries no FR claim. Each route satisfies different test regimes, and each has different implications for cleaning and for re-upholstery.
Does the foam behind the fabric matter for FR compliance?
It does in most test regimes. Cigarette and match-resistant tests commonly assess a composite of cover plus filling rather than the fabric alone, so switching the foam block or the interliner can invalidate an earlier report. On a re-upholstery programme, reusing the existing foam with new fabric without re-testing is one of the most common compliance gaps we see in project documentation.