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.
Impact resitant roof class 3.
After a hail storm your shingles may still experience some granular loss and dents at impact points.
Impact resistant shingles and other roofing materials are designed to resist damage from hail and flying debris abuse that might damage ordinary shingles.
Ir shingles are impact resistant not impact proof.
1 4 slate is not as strong and will usually come with a class 3 rating.
Impact standard for impact resistance of prepared roof covering materials with an impact resistance classification of.
The impact resistance classification class 1 class 2 class 3 class 4 of the product under u l.
The brand name of the roofing product.
Slate is considered impact resistant.
Class 1 class 2 class 3 class 4.
Shingles on an impact resistant roof are designed to withstand high winds and hail damage and have a class 4 rating see below.
So while an ir shingle may reduce these effects the real benefit lies in.
The roof covering product.
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.
However you ll need to pay attention to the thickness of the slate you re choosing.
5 8 slate typically receives a class 4 rating making it impact resistant.
It is important to note the truth regarding a couple misconceptions associated with impact resistant roof shingles.