Fire Rating Roofing Shingles

Wood shake plywood or particle board roof are the most common roofing types listed as class c.

Fire rating roofing shingles.

Classes b and c denote progressively less fire resistant qualities. But by including a particular underlying material it can meet the requirements for a class a roof. Class c roofing provides only light fire protection. Roofing with a class c rating is able to.

Class c fire resistant roofing material. Ul 790 is a quality assurance service listing. Shingles are categorized into classes that identify their fire resistance. Withstand a burning brand measuring 1 5 x 1 5 and weighing 1 4 gram.

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. Pressure treated shakes and shingles are the most common roofing materials to fall under the class b rating. An exterior fire retardant treated shake roof has a stand alone class b rating. 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. Generally most fiberglass shingles have class a fire ratings and most organic shingles such as treated wood shingles have class c ratings.