Roofing Shingle Classes

Experience maximum flame spread of 13 feet.

Roofing shingle classes.

I ll share on several test that can be performed in this category for the highest performing impact resistant shingles on the market today. There are three levels of fire resistance. Ul 790 and astm e 108. Class a is the highest level.

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. The class 4 shingle. This scrim reinforcement helps the shingle withstand the impact of hail.

Roofing with a class c rating is able to. Cool roof shingles california title 24. 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. Pressure treated shakes and shingles are the most common roofing materials to fall under the class b rating.

Withstand a burning brand measuring 1 5 x 1 5 and weighing 1 4 gram. With class 4 shingles there are no splits or tears. 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. Class c roofing provides only light fire protection.

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. What are roof shingles. Due to the materials used in their construction most asphalt shingle roof assemblies have a class a fire resistance rating.