BS5867 part 2 type B is a contract standard for fire retardancy for CURTAINS.
As an interior designer you do *NOT* need to understand the details of the test nor the performance criteria that needs to be achieved.
However interior designers are responsible for the project/installation and because this is a serious are concerning fire risk you DO NEED to:
– Be certain what standard is required for your project/installation;
– Know that you are specifying fabric that meets the appropriate standard; and
– Prove that the fabric you have installed is up to the job.
So here is what you need to do to achieve that, essentially what you need to do to do your job and to ensure you have covered the bases of your responsibility.
1. Determine the fire retardancy standards that need to be adhered to. This may involve contacting the local fire officer. Determine what documentation you need to provide them.
2. Liaise with your fabric supplier to determine if the fabric either:
– inherently meets the standards; or
– requires treatment.
3. On purchasing the fabric, specify the treatment required. You would say to the fabric company “Treat the fabric to the contract curtain standard BS 5867 part 2 type B, and provide me with documentation showing this has been done”.
4. What you have done now is to specify what standard of treatment has to be undertaken. By doing that there is no guarantee that the fabric will pass the appropriate test even though it has been treated to a standard where it should pass the test. Normally you will receive a document saying that the fabric has been treated to the standard. THIS DOES NOT MEAN IT HAS PASSED THE STANDARD. You need to determine if you want your specific batch of fabric to be specifically tested (after treatment). For larger projects, this will almost certainly be prudent to undertake. You will need to purchase additional fabric prior to treatment and engage the services of a fabric testing factory (not treatment factory). At the end of that process, you will receive documentation stating that the fabric meets the required standard.
Here is related information on fire retardancy for contract upholstery (Crib 5, BS7176 BS5852) and durability of fabric for contract and domestic upholstery. More…
The following test details are not normally required to be known by the designer:
A sample of the fabric, vertically held, is exposed to a small flame.
For type B (Hotels, etc) the ease of ignition is observed. It is also noted if the flame reaches one any edge of the specimen and/or if any burning pieces of fabric fall down.
For type C (NHS) the fabric is further analysed to see what happens once the flame stops but when the fabric still may be glowing.
NB: The fabric is tested before and after laundering
type B (12 wash cycles at 40°c)
type C (50 wash cycles at 40°c)
Test Performance Criteria
Type B Performance Criteria: The edges must remain completely intact and no burning debris should fall.
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