Flame Resistant Roofing

An exterior fire retardant treated shake roof has a stand alone class b rating.

Flame resistant roofing.

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. Expect to pay between 6 50 and 8 50 per square foot installed. A fire resistant or fireproof roof gives the entire structure a better chance to survive a fire.

Shingles are categorized into classes that identify their fire resistance. Stucco is a plaster that has been used for centuries for both artistic and structural purposes. Before choosing a material you should know the fire ratings that are given to each material. Metal roofing is non combustible and offers class a protection in combination with a fire resistant underlayment.

Modern stucco is. And you shouldn t overlook the roof as essential in fire protection since it s extremely vulnerable to sparks blown from wildland fire. The resistance to fire of roofing materials is rated based on a series of tests that is defined by a fire rating. Class c fire resistant roofing material.

A professional roofing contractor can help you decide upon the best fire resistant material for your roof. 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. But by including a particular underlying material it can meet the requirements for a class a roof. A reliable roofer will be able to find the right option to match your style and budget.

Here are a few materials on the market that are effective in withstanding fire. Class a is the most fire resistant and should be the choice of anyone living in wildfire prone areas. Fire resistant roofing materials fire ratings. It s lightweight won t corrode and requires little maintenance.

Fire resistance ratings time temperature include structural elements and everything above including the roof membrane and its surfacing. Class a roofing materials are the most fire resistant. Common underlying materials include a type 72 roll roofing material also known as 72 pound felt or 72 pound capsheet material and a panelized gypsum product. Concrete is often listed as among the best fire resistant roofing materials too.

Wood shake plywood or particle board roof are the most common roofing types listed as class c. 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.