Fire Rating Roofing Shingles

Shingles are categorized into classes that identify their fire resistance.

Fire rating roofing shingles.

Roofing with a class c rating is able to. Withstand a burning brand measuring 1 5 x 1 5 and weighing 1 4 gram. Pressure treated shakes and shingles are the most common roofing materials to fall under the class b rating. Consumer reports reveals the best roofing shingles from its comprehensive tests including 3 tab architectural and multilayered architectural asphalt shingles.

Class c roofing provides only light fire protection. An exterior fire retardant treated shake roof has a stand alone class b rating. 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.

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. Ul 790 is a quality assurance service listing. Class c fire resistant roofing material. Wood shake plywood or particle board roof are the most common roofing types listed as class c.

But by including a particular underlying material it can meet the requirements for a class a roof. Experience maximum flame spread of 13 feet.