Class 4 Impact Resistant Roof

When it comes to shingles class 4 shingles are the highest classification you can get when it comes to hail damage resistance.

Class 4 impact resistant roof.

Class four is an impact standard used to rate roofing materials like shingles and metal materials. As asphalt ages it becomes less pliable and more brittle. Roof coverings that have passed the ul standard 2218 test are classified by ul as either class 1 2 3 or 4. Fm and be rated as a class 1 2 3 or 4.

With class 4 shingles there are no splits or tears. Older class 4 roof systems can sustain damage from 2 1 2 stones. 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. 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. Class 4 impact resistant roofing shingles. 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.

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

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.