Fire Rating Roofing Shingles

Withstand a burning brand measuring 1 5 x 1 5 and weighing 1 4 gram.

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. Experience maximum flame spread of 13 feet. Most customer reviews of pabco roofing shingles are positive. These shingles are also not readily flammable will not readily contribute to the spread of fire and are relatively effective against moderate fire exposure.

Class c roofing provides only light fire protection. 110 130 mph wind warranty. Class a roofing materials are the most fire resistant. Consumer reports reveals the best roofing shingles from its comprehensive tests including 3 tab architectural and multilayered architectural asphalt shingles.

Roofing with a class c rating is able to. Class a fire rating shingles with the highest fire resistance are classified as class a. Features a diamond open tooth design. The ul tests under ul 790 evaluate the behavior of a roof covering under three fire hazards exposure of the roof to intermittent flame.

Ul 790 is a quality assurance service listing. Classes b and c denote progressively less fire resistant qualities. Shingles feature an algae defender. 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.

Pressure treated shakes and shingles are the most common roofing materials to fall under the class b rating. The main difference. Unique diamond shape is a good choice for homes with a steep roof. 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.

Shingles are categorized into classes that identify their fire resistance. These shingles will be effective against moderate fire exposures are not readily flammable and will not cause fires to spread. Class b fire rating shingles that offer moderate fire resistance are classified as class b.