Roofing Shingle Classes

Class c roofing provides only light fire protection.

Roofing shingle classes.

Experience maximum flame spread of 13 feet. Patented weatherguard technology helps duration storm shingles achieve a ul 2218 class 4 rating the highest rating for impact resistance by integrating a polymeric backing material on the shingle. 2218 steel ball listing. In a class 4 ul 2218 impact resistance test a 2 inch steel ball is dropped from 20 feet to see if the shingles will fracture.

With class 4 shingles there are no splits or tears. Cool roof shingles california title 24. This scrim reinforcement helps the shingle withstand the impact of hail. Withstand a burning brand measuring 1 5 x 1 5 and weighing 1 4 gram.

I ll share on several test that can be performed in this category for the highest performing impact resistant shingles on the market today. Currently the highest class of asphalt shingles is the class 4 shingle which will carry at least the u l. Class a is the highest level. Ul 790 and astm e 108.

With a regular shingle most of our competitors impact resistant shingles are only class 3 cracks and ruptures will appear from that kind of impact. Pressure treated shakes and shingles are the most common roofing materials to fall under the class b rating. Roofing with a class c rating is able to. The class 4 shingle.

Fire resistance is based on two test standards. Due to the materials used in their construction most asphalt shingle roof assemblies have a class a fire resistance rating. Roof shingles are installed in such a fashion that each seam or joint is overlapped by a shingle further up the roof.