Sofa Fire Safety Standards: BS 5852, BS 7177 & 16 CFR 1633 Explained

1. Why fire safety matters for sofa buyers

Upholstered furniture is one of the first items to ignite in a domestic fire, which is why the UK, other European countries and the US regulate its fire resistance. For a B2B buyer, the standard is not a formality: retail chains and contract projects (hotels, hospitality) refuse suppliers who cannot produce the test report for the required standard. Getting this right before you order is far cheaper than a rejected container at your destination port.

2. BS 5852 — the test method

BS 5852 ("Methods of test for assessment of the ignitability of upholstered seating by smouldering and flaming ignition sources") defines how a sofa is tested. Ignition sources are graded:

• Sources 0–1 (smouldering): a lit cigarette on the seating area — the baseline requirement for most residential furniture
• Sources 2–5 (flaming): a butane match flame (e.g. match-equivalent flame) applied to the fabric, filling or interliner
• Sources 6–7 (flaming): wood-crib flames representing a higher-intensity fire — used for higher-hazard contract environments

When a supplier says "meets BS 5852", ask which ignition source level and for which components (fabric only, or fabric + foam). The answer changes the product's suitability for your channel.

3. BS 7177 — the classification

BS 7177 ("Specification for resistance to ignition of upholstered furniture") turns the test result into a classification for real-world use:

For a UK retail launch, a low-hazard classification (cigarette resistance) is typically the entry point; contract hospitality buyers usually require medium or high hazard — and the test reports to prove it.

4. 16 CFR 1633 — the US mattress standard

16 CFR Part 1633 is the US federal open-flame flammability standard for mattresses. It sets a pass/fail performance requirement for the mattress set (mattress + foundation) sold in the United States. Note the distinction:

• Mattresses (US): regulated under 16 CFR 1633 (open flame) and 16 CFR 1632 (cigarette)
• Upholstered furniture (US): follows California TB 117-2013, with the federal 16 CFR 1634 rule under development

If you are buying sofas for the US market, ask your supplier for the TB 117-2013 test data; 16 CFR 1633 applies to the mattress line.

5. What the EU / UK market requires

• UK: The Furniture and Furnishings (Fire) (Safety) Regulations require furniture to resist cigarette and match-flame ignition — tested to BS 5852 and classified per BS 7177.
• EU: There is no single EU-wide flammability standard for furniture; each member state applies national rules (e.g. France's NF D60-013, Germany's DIN 66084). Confirm your target country's requirement.
• Chemicals: EU buyers should also confirm REACH compliance of fabrics, foams and treatments, independent of fire resistance.

A supplier's test reports should name the specific standard, the model tested, the ignition-source result, and the laboratory that performed the test.

6. How KCK.CASA documents fire safety

KCK.CASA confirms its upholstery fabrics and foam meet the BS 5852 fire retardant standard, with BS 7177 classification for the UK market, and its mattress line complies with the US 16 CFR 1633 open-flame standard. Third-party testing and inspection are performed with SGS and TÜV. Certificate copies and test reports are available on request for project tenders — see the Certifications page for the verified list.

Frequently asked questions