Flame Resistant Roofing

Fire resistant roofing materials fire ratings.

Flame resistant roofing.

Metal roofing is non combustible and offers class a protection in combination with a fire resistant underlayment. Here are a few materials on the market that are effective in withstanding fire. Their knowledge and experience can get you the best option for your needs and budget. An exterior fire retardant treated shake roof has a stand alone class b rating.

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. 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. A fire resistant or fireproof roof gives the entire structure a better chance to survive a fire. Obviously since wildfires and the fire season has become increasingly worse it is important to note the roofing materials that are the lowest rated.

Wood shake plywood or particle board roof are the most common roofing types listed as class c. Concrete is often listed as among the best fire resistant roofing materials too. 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. A professional roofing contractor can help you decide upon the best fire resistant material for your roof.

Class a is the most fire resistant and should be the choice of anyone living in wildfire prone areas. It s lightweight won t corrode and requires little maintenance. Shingles are categorized into classes that identify their fire resistance. Classes b and c denote progressively less fire resistant qualities.

A reliable roofer will be able to find the right option to match your style and budget. Class a roofing materials are the most fire resistant. 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. Stucco is a plaster that has been used for centuries for both artistic and structural purposes.

Modern stucco is. But by including a particular underlying material it can meet the requirements for a class a roof. Fire resistance ratings time temperature include structural elements and everything above including the roof membrane and its surfacing. Before choosing a material you should know the fire ratings that are given to each material.

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.