Expanded Polystyrene Foam Board Insulation Fire Resistant

1 in x 4 ft x 8 ft.

Expanded polystyrene foam board insulation fire resistant.

This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. This q a article discusses the requirement for a fire resistant covering for foam and foam board board building insulation. It is denser than eps and provides more r value with a rating of 5 per inch of thickness. Because of its resistance to moisture foam board insulation is a great choice.

Like all organic building materials polystyrene foam is combustible and does react to fire resulting in the decomposition of styrene and the release of carbon monoxide smoke and water. Exposed foam board insulation fire hazards. Like practically all organic building materials polystyrene foam is combustible. Since most fire codes call for a minimum of half hour fire rating over foam insulations paneling would probably not provide a sufficient fire barrier over the foam insulating board.

However in practice its burning behavior depends on the conditions under which it is used as well as the inherent properties of the material. However the burning behaviour of eps depends largely on end use conditions and whether the eps material is with or without a fire retardant additive.