For example shake roofing with a fire retardant treatment rates class b on its own but achieves a class a rating when combined with specified underlying materials such as type 72 roll roofing material.
Ul class a roof.
Assembly rated class a roof coverings are those that meet class a standards when combined with other elements.
This class for roof will qualify homeowners for a discount with most insurance companies.
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A roof is classified as a class a as the result of one test the external spread of flame test astme 108 or ul 790 standard.
All class 1 roof assemblies are class a roofs but not all class a roof systems meet the class 1 rating.
Asphalt roof shingles roofing shingles architectural shingles class a roof shingles 4 in.
The ul certification mark on roofing products and assemblies is relied on by code enforcement officials and buyers to verify that your products and systems meet regulatory requirements.
A stone coated steel roof costs about 2 1 2 times as much as a standard asphalt roof.
Class a roof assemblies include minimum 16 oz sq.
It also serves as a key differentiator for products within the roofing market.
Roofing materials are changing for the better becoming more and more advanced each year.