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fire grade of the external wall insulation material
Oct 16, 2018

The fire grade of the external wall insulation material, the fire grade of the external wall insulation material, the fire grade of the external wall insulation material, the fire grade of the external wall insulation material, the fire grade of the external wall insulation material.
(1) China's national standard GB8624-97 classifies the combustion properties of building materials into the following grades
Class A: Inflammable building materials: WWinorganic materials that rarely burn.
B1: Inflammable building materials: Inflammability materials have a good flame retardant effect. It is difficult to catch fire in the air or under high temperature, and it is not easy to spread quickly.
Class B2: Flammable building materials: Flammable materials have a certain flame retardant effect. In the air, open fire or under the action of high temperature will immediately burn, which will easily lead to the spread of fire, such as wooden pillars, wooden frame, wooden beams, wooden stairs and so on.
B3: Flammable building materials: No flame retardant effect, easy to burn, fire risk is high.
2, external insulation materials can be divided according to the fire grade
1. Thermal insulation materials with A combustion properties:
WWinorganic insulation materials, rock cotton, glass cotton, foam glass, foam ceramics, foam cement, etc..
2. Thermal insulation material with a combustion performance of B1:
Special treatment of extruded polyphenyl plate(XPS) / special treatment of polyurethane(PU), phenolic, polyphenyl powder, etc..
3. Thermal insulation material with a combustion performance of B2:
Molded polyphenyl plate(EPS), extruded polyphenyl plate(XPS), polyurethane(PU), polyethylene(PE) and so on.

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