Roofing Shingle Classes

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.

Roofing shingle classes.

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. Roofing with a class c rating is able to. Due to the materials used in their construction most asphalt shingle roof assemblies have a class a fire resistance rating. There are three levels of fire resistance.

Cool roof shingles california title 24. 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. What are roof shingles. The class 4 shingle.

Roof shingles consist of a series of individual overlapping components that when laid together in rows or courses starting at the bottom edge of a roof form a barrier designed to repel water snow and ice. Roof shingles are installed in such a fashion that each seam or joint is overlapped by a shingle further up the roof. Class c roofing provides only light fire protection. This scrim reinforcement helps the shingle withstand the impact of hail.

Experience maximum flame spread of 13 feet. Currently the highest class of asphalt shingles is the class 4 shingle which will carry at least the u l. Withstand a burning brand measuring 1 5 x 1 5 and weighing 1 4 gram. Ul 790 and astm e 108.

2218 steel ball listing. I ll share on several test that can be performed in this category for the highest performing impact resistant shingles on the market today. Pressure treated shakes and shingles are the most common roofing materials to fall under the class b rating.