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