This British Standard specifies requirements for flexible loadbearing combustion modified, polyurethane cellular materials, manufactured in block, sheet and strip form, in moulded and fabricated shapes and as reconstituted material.

Materials defined as combustion modified are those that meet the legal and technical requirements of the Furniture and Furnishings (Fire) (Safety) Regulations 1988 [1], the Furniture and Furnishings (Fire) (Safety) (Amendment) Regulations 1989 [2] and the Furniture and Furnishings (Fire) (Safety) (Amendment) Regulations 1989 [3] for use in domestic upholstered furniture, mattresses and bed bases.

In addition to the definitive requirements, this standard also requires the items detailed in Clause 3 to be documented. For compliance with this standard, both the definitive requirements and the documented items have to be satisfied.