Euroclasses

Euroclasses introduced by Commission Decision (2000/147/EC) of 8 February 2000 provide common comparison platform for the reaction to fire behaviour for nearly all construction product. Building materials are divided into classes depending on how they influence ignition of fire, spread of fire and production of smoke. Glass wool insulation will not support combustion and has the highest possible classification Euroclass A (A1 & A2 s1d0)

In the Euroclass classification system insulation products are categorised into one of seven classes for reaction to fire. A class marked with capital letter from A to F indicates product behaviour in different stages of fire development (see table below). Additional information about smoke and faming droplets release is marked in subscript e.g. A2 s1d0 . For Floor coverings the Euroclass is denoted by a subscript f, ie Bf .

Fire Class	Tests simulations		Time to flashover	Contribution to fire growth
A₁	Fully developed fire in a room	Single burning item in a room	NO Flashover	NONE
A₂	Fully developed fire in a room		NO Flashover	NONE
B	Small fire attack on limited area		NO Flashover	XS
C			after 10 minutes	S
D			2 ? 10 minutes	M
E			before 2minutes	L
F	No A₁÷E

Test methods

The following test methods are specified in relation to the envisaged reaction to fire classification.

	Non-combustibility test (EN ISO 1182) This test identifies products that will not, or significantly not, contribute to a fire, regardless of their end use. The test is relevant for the classes A1, A2, A1fl and A2fl.
	Gross calorific potential (EN ISO 1716) This test determines the potential maximum total heat release of a product when completely burning, regardless of its end use. The test is relevant for the classes A1, A2, A1fl and A2fl.
	Single burning Item test (EN 13823) This test evaluates the potential contribution of a product to the development of a fire, under a fire situation simulating a single burning item in a room corner near to that product. The test is relevant for the classes A2, B, C and D
	Ignitability (EN ISO 11925-2) This test evaluates the ignitability of a product under exposure to a small flame.The test is relevant for the classes B, C, D, E, Bfl, Cfl, Dfland Efl.

PDF Icon F Euroclasses table1

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