Fire Rating Roofing Shingles

Class a fire resistance rating.

Fire rating roofing shingles.

These shingles will be effective against moderate fire exposures are not readily flammable and will not cause fires to spread. Consumer reports reveals the best roofing shingles from its comprehensive tests including 3 tab architectural and multilayered architectural asphalt shingles. Shingles feature an algae defender. Class c roofing provides only light fire protection.

110 130 mph wind warranty. Ul 790 is a quality assurance service listing. Most customer reviews of pabco roofing shingles are positive. If wood shakes and shingles are impregnated with fire retardant chemicals they meet the requirements for a class b fire rating and can meet a class a rating if additional materials are included in the roof assemblies.

Class a roofing materials are the most fire resistant. Unique diamond shape is a good choice for homes with a steep roof. Shingles are categorized into classes that identify their fire resistance. Only available in four colors.

Withstand a burning brand measuring 1 5 x 1 5 and weighing 1 4 gram. The main difference. The ul tests under ul 790 evaluate the behavior of a roof covering under three fire hazards exposure of the roof to intermittent flame. Generally most fiberglass shingles have class a fire ratings and most organic shingles such as treated wood shingles have class c ratings.

These shingles are also not readily flammable will not readily contribute to the spread of fire and are relatively effective against moderate fire exposure. A standard fire test is used to determine the fire rating of a roof covering. Class a fire rating shingles with the highest fire resistance are classified as class a. Pressure treated shakes and shingles are the most common roofing materials to fall under the class b rating.

Experience maximum flame spread of 13 feet. Features a diamond open tooth design. Classes b and c denote progressively less fire resistant qualities.