Class 4 Impact Resistant Roof

Class 4 roof covering is the most impact resistant roof and receives the highest premium discount.

Class 4 impact resistant roof.

Effects of aging on a class 4 roof. Underwriters laboratories ul is a not for profit independent testing organization that delivers the verified information to help consumers make accurate decisions about products like impact resistant roofing materials. Fm and be rated as a class 1 2 3 or 4. 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 a regular shingle most of our competitors impact resistant shingles are only class 3 cracks and ruptures will appear from that kind of impact. Ul developed a test to rate the strength of roofing materials called the ul. Approved laboratory roof class location. Storms that bring hail airborne debris and high winds put your roof at risk for damage and installing impact resistant shingles may.

Summarizing the result we would be looking at for a class 3 roof is earned if the sample does not crack when hit twice in the same spot by a 1 75 inch diameter steel ball. With class 4 shingles there are no splits or tears. They are associated with the ul 2218 impact test which involves dropping a two inch steel ball from 20 feet high onto the shingle and examining whether the shingle cracks or not. Older class 4 roof systems can sustain damage from 2 1 2 stones.

As a result it no longer has the ability to transfer impact energy and the mat is damaged and or punctures occur to this system. Class 4 impact resistant roofing shingles. As asphalt ages it becomes less pliable and more brittle. When it comes to shingles class 4 shingles are the highest classification you can get when it comes to hail damage resistance.

After performing the test roofing manufacturers would be scored based on the resistance of the material getting a rating from 1 least hail resistant to 4 most hail resistant.