Ul class 1 2 3 and 4 tx only ul and fm class 3 and 4 all other states.
Level 3 4 roofing.
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As you contact various contractors or suppliers you should ask about roofing materials that meet ul standard 2218.
A class 4 rating the material should not get damaged when hit twice in the same spot by 2 inch diameter steel ball.
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Class 4 roofing shingles are considered to be a premium product and therefore may cost more than standard non impact resistant shingles.
Available in a diverse selection.
Low profile head reduces damage to installation and single ply membrane when attaching to steel or timber.
However due to the various benefits of class 4 impact resistant shingles the extra cost upfront may be a worthwhile investment if you live in an area where hail and wind storms frequently occur.
Architectural shingles are a step up from 3 tab shingles.
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.
Roof coverings that have passed the ul standard 2218 test are classified as either class 1 2 3 or 4.
Roof coverings that have passed the ul standard 2218 test are classified by ul as either class 1 2 3 or 4.
Standard entry level 3 tab shingles are the cheapest and thinnest.
Roofing screw 28 special interest promotional items 35 roofing screws.
A fiberglass mat has proven to be a more sustainable effective product.
A class 4 roof covering receives the highest premium credit.
Class 1 would be the lowest tested rating.
This steel ball must hit the field area of the shingle two times and the edge of the shingles two times without damaging the mat to qualify for a particular class rating.
Approved laboratory roof class location.