Colorcoat® Connection FAQ’s – BS476
You say in The Colorcoat® Building manual that BS476 is to be superseded by the European fire standards possibly in 2007 can you tell me what is happening here and if this will have any effect affect on my chosen wall cladding materials?
The Building Regulations Approved Document B specifies the minimum requirement for building elements or components in 2 main ways:
- Resistance to fire
- Reaction to fire
There is currently a period of coexistence of standards. This means that a product, which conforms to either the British standards (BS476) or the European standard (EN13501-1 2002) can be specified.The exact duration of this coexistence of standards is not yet confirmed. However, all Colorcoat® products can meet the Approved Document B requirements for boundary wall and high rise wall cladding applications.This situation will remain once the British standards have been superceded.
What resistance to fire does Colorcoat HPS200® have and can I get at least half an hours resistance if I use it?
Resistance to fire performance is measured according to BS476 part 22, Colorcoat HPS200® pre-finished steel can be used as part of a wall construction to achieve good levels of fire resistance. The exact performance will depend on the construction of the wall and the insulation material used, which may vary dependant on the profilers’ specification.Profilers can offer a range of constructions using Colorcoat HPS200®, which will exceed half an hour insulation performance. I have been told I have to obtain materials on a roof that comply to Part 3 AA what exactly is this and what is AA?Roof covering materials are tested according to BS476 part 3.This measures the spread of flame on the surface and the resistance to fire penetration through the roof structure. Each parameter is graded from A to DAll Colorcoat® products can achieve class AA, which is the highest performance and indicates no spread of flame and no penetration through the construction during testing. For more information on the above, visit www.colorcoat-online.com or contact the Colorcoat Connection® helpline on
+44 (0) 1244 892322