TGD B 2006 – 2.0.5 – Fire Spread and Lining Materials Classification of Performance

2.0.5 Appendix A describes the different classes of performance for materials used as a wall or ceiling lining and the appropriate methods of test, including performance ratings for thermoplastic materials, referred to as TP(a) rigid and TP(b). The National classifications used are based on tests in BS 476: Parts 6 and 7. Tests in BS 2782 and BS 5438 are used for classification of thermoplastic materials. The European classifications are described in I.S. EN 13501-1:2002, Fire classification of construction products and building elements, Part 1- Classification using data from reaction to fire tests. They are based on a combination of four European test methods; I.S. EN ISO 1182: 2002, Reaction to fire tests for building products – Non combustibility test I.S. EN ISO 1716: 2002, Reaction to fire tests for building products – Determination of the gross calorific value I.S. EN 13823: 2002, Reaction to fire tests for building products – Building products excluding floorings exposed to the thermal attack by a single burning item and BS EN ISO 11925-2: 2002, Reaction to fire tests for building products, Part 2 – Ignitability when subjected to direct impingement of flame. For some building products, there is currently no generally accepted guidance on the appropriate procedure for testing and classification in accordance with the European fire tests. Until such time that the appropriate European test and classification methods for these building products are published, classification may only be possible using existing national test methods. Table A6 of Appendix A gives typical performance ratings which may be achieved by some generic materials and products.

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