Class 4 Impact Resistant Roof

If you re one of the millions of american homeowners who live in an area where intense storms frequently occur then your choice of roofing shingles plays a critical role in protecting your roof from storm damage.

Class 4 impact resistant roof.

As asphalt ages it becomes less pliable and more brittle. Class four is an impact standard used to rate roofing materials like shingles and metal materials. 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. Ul developed a test to rate the strength of roofing materials called the ul.

Storms that bring hail airborne debris and high winds put your roof at risk for damage and installing impact resistant shingles may. 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. 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. With class 4 shingles there are no splits or tears.

Class 4 impact resistant roofing shingles. 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. Fm and be rated as a class 1 2 3 or 4. 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.

Approved laboratory roof class location. Effects of aging on a class 4 roof. Class 4 roof covering is the most impact resistant roof and receives the highest premium discount. 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.

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.