Fire Rated Roofing Materials

Class b materials are fire resistant but only withstand moderate exposure to fire.

Fire rated roofing materials.

Roofing with a class c rating is able to. But by including a particular underlying material it can meet the requirements for a class a roof. Wood shake plywood or particle board roof are the most common roofing types listed as class c. The benefit of metal tiles is that they are non corrosive and sit strong on houses with a steep slope.

Withstand a burning brand measuring 1 5 x 1 5 and weighing 1 4 gram. Shingles are categorized into classes that identify their fire resistance. Stop fire and stay stylish. Metal roofing can be made from copper zinc and steel as well as various alloys and comes in a variety of finishes colors and designs.

Fiberglass based asphalt shingles as the most economical of all residential roofing materials asphalt shingles make up 80 percent of the u s. Generally most fiberglass shingles have class a fire ratings and most organic shingles such as treated wood shingles have class c ratings. Class c roofing provides only light fire protection. Class b materials are banned in some areas however because they are combustible.

The fiberglass based variety also offers excellent fire resistance when installed with fire code compliant underlayments. Class a roofing materials are the most fire resistant. Roof eaves overhangs are a fire hazard but they can be protected with an encasement of fire resistant material. Most metal roofs are made of steel copper zinc and alloys that are best for the dry environment in nevada.

An exterior fire retardant treated shake roof has a stand alone class b rating. When tested to see how fast a fire spreads with these materials class a materials stop the spread two feet better than class b. Pressure treated shakes and shingles are the most common roofing materials to fall under the class b rating. These materials include clay concrete shingles metal roofing and fiberglass asphalt composition.

Class c fire resistant roofing material obviously since wildfires and the fire season has become increasingly worse it is important to note the roofing materials that are the lowest rated. Stucco is often recommended as one of the best materials for boxing in hazardous eaves. Metal tiles are made of a material that does not ignite when on fire with a fire resistant barrier with a class a protection. Experience maximum flame spread of 13 feet.

Metal roofing is non combustible and offers class a protection in combination with a fire resistant underlayment. It s lightweight won t corrode and requires little maintenance. A one inch 2 54 centimeter layer of stucco can easily lend a 1 hour fire rating to a wall source.