However you ll need to pay attention to the thickness of the slate you re choosing.
Impact resistant roof class 3.
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.
Class 1 class 2 class 3 class 4.
Impact standard for impact resistance of prepared roof covering materials with an impact resistance classification of.
Year manufactured date of installation.
Considered a class 4 product impact resistant shingles can be made of steel rubber asphalt with sbs rubber asphalt with special matting materials aluminum copper and resin.
The roof covering installed on this residence meets one of the following requirements.
While class 4 is the highest rating for impact resistance there are also lower ratings a shingle can receive such as class 3 and class 2.
The roof covering product.
It is important to note the truth regarding a couple misconceptions associated with impact resistant roof shingles.
Impact resistant shingles and other roofing materials are designed to resist damage from hail and flying debris abuse that might damage ordinary shingles.
Aside from hail impact these materials can withstand high winds of up to 110 mph.
The difference between the ratings is that class 3 shingles withstand a smaller steel ball dropped from a lower height and likewise for class 2.
The brand name of the roofing product.
Roof coverings that have passed the ul standard 2218 test are classified by ul as either class 1 2 3 or 4.
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.
1 4 slate is not as strong and will usually come with a class 3 rating.
Ir shingles are impact resistant not impact proof.
5 8 slate typically receives a class 4 rating making it impact resistant.
Impact tested to prevent cracks and tears 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.
So while an ir shingle may reduce these effects the real benefit lies in.
Class 4 roof covering is the most impact resistant roof and receives the highest premium discount.
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.
What are impact resistant roofing materials.
Approved laboratory roof class location ul class 1 2 3 and 4 tx only ul and fm class 3 and 4 all other states.
The impact resistance classification class 1 class 2 class 3 class 4 of the product under u l.
