Fire Rating Roofing Shingles

Pressure treated shakes and shingles are the most common roofing materials to fall under the class b rating. 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. Ul 790 is a quality assurance service listing.

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Generally most fiberglass shingles have class a fire ratings and most organic shingles such as treated wood shingles have class c ratings.

Fire rating roofing shingles.

Roof covering packaging that encloses shingles or other roofing that have a fire rating will display the level of fire or wind resistance rating of the materials. Experience maximum flame spread of 13 feet. Class a roofing materials are the most fire resistant. Obviously since wildfires and the fire season has become increasingly worse it is important to note the roofing materials that are the lowest rated.

Classes b and c denote progressively less fire resistant qualities. Class c fire resistant roofing material. Wood shake plywood or particle board roof are the most common roofing types listed as class c. An exterior fire retardant treated shake roof has a stand alone class b rating.

But by including a particular underlying material it can meet the requirements for a class a roof. Consumer reports reveals the best roofing shingles from its comprehensive tests including 3 tab architectural and multilayered architectural asphalt shingles. 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.

Class c roofing provides only light fire protection. Roofing with a class c rating is able to.

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