Fire Rating Roofing Shingles

Pressure treated shakes and shingles are the most common roofing materials to fall under the class b rating.

Fire rating roofing shingles. Generally most fiberglass shingles have class a fire ratings and most organic shingles such as treated wood shingles have class c ratings. Roofing with a class c rating is able to. Class c fire resistant roofing material. Shingles are categorized into classes that identify their fire resistance.

But by including a particular underlying material it can meet the requirements for a class a roof. Obviously since wildfires and the fire season has become increasingly worse it is important to note the roofing materials that are the lowest rated. 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. Classes b and c denote progressively less fire resistant qualities.

Withstand a burning brand measuring 1 5 x 1 5 and weighing 1 4 gram. Consumer reports reveals the best roofing shingles from its comprehensive tests including 3 tab architectural and multilayered architectural asphalt shingles. An exterior fire retardant treated shake roof has a stand alone class b rating. Class a roofing materials are the most fire resistant.

Wood shake plywood or particle board roof are the most common roofing types listed as class c. Experience maximum flame spread of 13 feet.