Fire Retardant Roofing Materials

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

Fire retardant roofing materials.

Metal tiles are made of a material that does not ignite when on fire with a fire resistant barrier with a class a protection. Gypsum board also known as drywall consists of a layer of gypsum sandwiched between two sheets of paper. One of the most important aspects to fire proofing your home or building is the roof. Many structural materials will require underlying gypsum sheathing in order to achieve a good fire resistant rating and gypsum board is the most commonly used fire resistant interior finish.

Fire resistant roofing materials with the threat of wildfires being more real these days it is important to make your building fire resistant. Classes b and c denote progressively less fire resistant qualities. Class b materials are fire resistant but only withstand moderate exposure to fire. Class b roofing is made of combustible materials that are treated with chemicals to make them more fire retardant.

Class a roofing materials are the most fire resistant. Many communities in fire prone areas ban class b and class c roofing materials for safety reasons. The fiberglass based variety also offers excellent fire resistance when installed with fire code compliant underlayments. Class a roofing materials are typically non combustible can withstand severe fire exposure and don t produce firebrands.

The different materials can vary from zinc copper steel galvanized steel aluminum and so on. 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 called densdeck. Shingles are categorized into classes that identify their fire resistance. The benefit of metal tiles is that they are non corrosive and sit strong on houses with a steep slope.

Generally most fiberglass shingles have class a fire ratings and most organic shingles such as treated wood shingles have class c ratings. How doers get more done. Most metal roofs are made of steel copper zinc and alloys that are best for the dry environment in nevada. Class b materials are banned in some areas however because they are combustible.

As the most economical of all residential roofing materials asphalt shingles make up 80 percent of the u s. Class c roofing is made up of things like untreated wood shakes and shingles which will only survive light fire damage. These materials include clay concrete shingles metal roofing and fiberglass asphalt composition.