What is the difference between non combustibility and limited combustibility?
Non-combustibility Non-combustible materials are defined by the Building Regulations applicable to all parts of the United Kingdom and the Republic of Ireland(1) and include; • Materials classified as Class A1 in accordance with BS EN 13501-1: 2002 Fire classification of construction products and building elements – Part 1: Classification using test data from reaction to fire tests, when tested to –(i) BS EN ISO 1182: 2002 Reaction to fire tests for building products – Non-combustibility test; and(ii) BS EN ISO 1716: 2002 Reaction to fire tests for building products – Determination of the heat of combustion. • Materials classified as non-combustible when tested in accordance with BS 476: Part 4:1970 (1984) Non-combustibility test for materials; • Materials which when tested in accordance with BS 476: Part 11: 1982 (1988) do not flame and do not cause a rise in temperature on either the centre (specimen) thermocouple or the furnace thermocouple; Rockwool stone wool insulation is non-com
