Fire Rating Roofing Shingles

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. Withstand a burning brand measuring 1 5 x 1 5 and weighing 1 4 gram. But by including a particular underlying material it can meet the requirements for a class a roof.

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Class c fire resistant roofing material.

Fire rating roofing shingles.

Roofing with a class c rating is able to. Shingles are categorized into classes that identify their fire resistance. Classes b and c denote progressively less fire resistant qualities. Consumer reports reveals the best roofing shingles from its comprehensive tests including 3 tab architectural and multilayered architectural asphalt shingles.

Obviously since wildfires and the fire season has become increasingly worse it is important to note the roofing materials that are the lowest rated. Class c roofing provides only light fire protection. An exterior fire retardant treated shake roof has a stand alone class b rating. Ul 790 is a quality assurance service listing.

Wood shake plywood or particle board roof are the most common roofing types listed as class c. Pressure treated shakes and shingles are the most common roofing materials to fall under the class b rating. 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. Generally most fiberglass shingles have class a fire ratings and most organic shingles such as treated wood shingles have class c ratings.

Experience maximum flame spread of 13 feet. Class a roofing materials are the most fire resistant.

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