Category: Upholstery Fabric

For a complete guide to specifying fabric for hotel and hospitality projects, including BS 7176 fire certification, cleaning regime compatibility, and Martindale thresholds by room type, see: How to Specify Fabric for Hotel and Hospitality Projects.

For a comprehensive guide to BS 5852 Crib 5, including what the test is, the three-stage procedure, the difference between inherent and topical certification, and how to specify correctly, see: BS 5852 Crib 5: A Complete Guide for Interior Designers and Specifiers.

Summary: for contract upholstery in the UK, the full test is a water-soak plus Crib 5 plus cigarette test plus match test. Read on for the detail on how to get the treatment done correctly.

For contract upholstery fabric in the UK your fabric normally needs to be treated to pass BS 5852 Source 5 (Crib 5). When getting a fabric treated, ask for it to be treated to that standard. As a designer that is all you should normally have to do.

Treatment must be undertaken at a UKAS-accredited company. There are various ways of treating fabrics to meet the standard. You do not need to know them all; that is the job of the treatment house. Tell them what standard the fabric needs to achieve, that you will be getting it tested independently afterwards (that encourages them to do it properly), and that the fabric will be subject to a water-soak test.

The reason for specifying the water-soak is that some older treatment methods are permissible within the standard but can fail the water-soak stage. These treatments can contain phosphorous-based chemicals that wash out. If a fabric is not inherently fire retardant, part of the test involves soaking it in water, which can remove the treatment and cause the test to fail.

Some treatment houses do not have the machinery required for the more advanced treatment methods and simply immerse fabric in a bath of fire-retardant chemicals. Specifying that you will be testing afterwards, including the water-soak, motivates the treatment house to use the correct process.

As part of the treatment process, some companies will carry out an indicative test and issue a certificate of treatment. This means the fabric should pass the Crib 5 test. However the crib test itself has not been carried out at this stage. Check with your client and fire officer whether an indicative certificate is acceptable, or whether they require the full independent Crib 5 test to be completed, which takes longer and costs more.

Fire regulation must be taken seriously. The repercussions of non-compliance are significant.

As a minimum, when commissioning FR treatment:

• Use a UKAS-accredited treatment company.
• Specify: treat this fabric to pass BS 5852 Source 5 (Crib 5).
• Specify: it will be water-soaked and tested independently afterwards.
• Ask for an indicative test at the end of treatment and a certificate of treatment.

BS 7176 and Hazard Categories

Most UK fabric companies and designers work to Crib 5. There is a higher level of testing and certification called BS 7176, which includes the Crib 5 test, the cigarette and match tests, and the water-soak, and additionally requires the test to document the specific end-use environment and the exact foam to be used in the installation. This means the test mimics your specific project’s conditions as closely as possible.

When specifying a BS 7176 test you need to state how the fabric will be used: in a hotel, a restaurant, a hospital, a prison, an offshore installation, and so on. These end-use environments determine the hazard category of the test.

The treatment applied to achieve BS 7176 Medium Hazard is the same as for Crib 5. The difference lies in the documentation and the scope of the test. Specifying BS 7176 Medium Hazard is advisable for complex or sensitive contract projects, and for furniture manufacturers who wish to label their products as suitable for specific commercial environments.

For a full explanation of BS 7176 hazard categories and when to use them, see our complete guide to BS 5852 Crib 5.