Fire Resistant Roofing Membrane

For a flat roof system the resistance of the roof to external fire.

Fire resistant roofing membrane.

It is important to note that there are no fire ratings for roofing membranes. Manufactured using a highly effective fire retardant and underlaid with a fire resistant barrier this assembly is one of only a few synthetic roofing materials to get ul s class a fire rating. Obviously since wildfires and the fire season has become increasingly worse it is important to note the roofing materials that are the lowest rated. When selecting a fire resistant roofing system it is usually recommended that the system in question has a ul class a fire resistance rating.

Class c fire resistant roofing material. Vinyl roofing membranes contain additional fire retardants making this cool roofing material slow to catch or spread fire and self extinguishing when the. All ratings are. A one hour rating would mean the structural elements have not yet reached their yield point when exposed to a under deck heat load defined in astm e119 for steel structural members as reaching 1 070 degrees f.

The fire retardant sheet is made up of a bottom ply of standard and a top ply of fire retardant compound. In some jurisdictions roof assemblies are required to be fire resistant. Expect to pay between 6 50 and 8 50 per square foot installed. Versashield fire resistant roof deck protection provides the very best fire protection.

Wood shake plywood or particle board roof are the most common roofing types listed as class c. Description the firestone rubbergard epdm fr fire retardant membrane is a 100 cured roofing membrane made of a synthetic rubber ethylene propylene diene terpolymer. Initially most if not all roofing manufacturers produce some systems that do possess this attribute. Fire resistance ratings time temperature include structural elements and everything above including the roof membrane and its surfacing.

Roofing and waterproofing systems manufacturer polyglass usa has created a new dual purpose roof underlayment polystick xlr made to provide waterproofing and fire resistance in high temperature. The fire rating of a single ply membrane is determined through standardised testing methods which take into account the complete flat roof system from the structural deck upwards. No roofing system is 100 resistant to everything. If your building is in an area that s in danger of falling debris such as tree branches or heavy foot traffic opt for a thicker membrane such as 75 mil.

Versashield fire resistant roof deck protection is a key part of the gaf lifetime roofing system 1 and has earned the good housekeeping seal. Rubbergard epdm fr fire retardant roofing membrane 1. Polyvinyl chloride vinyl or pvc is a naturally fire resistant polymer a distinction between it and all other roofing plastics.