Fire Resistant Flat Roof

Rubbergard epdm fr fire retardant roofing membrane 1.

Fire resistant flat roof. As many people know wood is fuel for a fire despite the fact that it is a valuable and reliable roofing material. Fire resistance ratings time temperature include structural elements and everything above including the roof membrane and its surfacing. Examples of a class a roof covering include concrete or clay roof tiles fiberglass asphalt composition shingles and metal roofs. Polycarbonate is almost as transparent as glass but with added benefits.

Metal tiles are made of a material that does not ignite when on fire with a fire resistant barrier with a class a protection. The rock wool insulation gives strength and protection in case of fire. An unrated roof is the most vulnerable the most common example of an unrated roof covering is one made using non fire retardant treated wood shakes or shingles. The fire rating of a roof covering is either class a class b class c or unrated.

A fire resistant or fireproof roof gives the entire structure a better chance to survive a fire. A rooftop fire can result in ignition of the underlying combustible roof deck if the mass of surfacing membrane and insulation is inadequate to thermally protect the deck from reaching its ignition temperature. The benefit of metal tiles is that they are non corrosive and sit strong on houses with a steep slope. Class a roofing materials are the most fire resistant.

Most metal roofs are made of steel copper zinc and alloys that are best for the dry environment in nevada. It is flexible fire resistant chemical resistant and virtually unbreakable. Isofire roof is a panel for roofing suited for new constructions and the refurbishing of industrial and commercial roofs. An alternative to glass is polycarbonate.

Shingles are categorized into classes that identify their fire resistance. How fire resistant is your current roof. Wood shake plywood or particle board roof are the most common roofing types listed as class c. Classes b and c denote progressively less fire resistant qualities.

The fire retardant sheet is made up of a bottom ply of standard and a top ply of fire retardant compound. Class a is the highest rating offering the highest resistance to fire and unrated is the worst. An example of an unrated covering is an untreated wood shake roof. It is much stronger than glass having an impact resistance that is 200 times that of glass.

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. Class a is the most fire resistant and should be the choice of anyone living in wildfire prone areas.