Class 1 class 2 class 3 class 4.
Impact resitant roof class 3.
Ir shingles are impact resistant not impact proof.
Impact standard for impact resistance of prepared roof covering materials with an impact resistance classification of.
The roof covering product.
What are impact resistant roofing materials.
Slate is considered impact resistant.
Shingles on an impact resistant roof are designed to withstand high winds and hail damage and have a class 4 rating see below.
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.
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.
The brand name of the roofing product.
1 4 slate is not as strong and will usually come with a class 3 rating.
The roof covering installed on this residence meets one of the following requirements.
After a hail storm your shingles may still experience some granular loss and dents at impact points.
However you ll need to pay attention to the thickness of the slate you re choosing.
Impact resistant shingles and other roofing materials are designed to resist damage from hail and flying debris abuse that might damage ordinary shingles.
The impact resistance classification class 1 class 2 class 3 class 4 of the product under u l.
5 8 slate typically receives a class 4 rating making it impact resistant.