Ul Class A Roof

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.

Class a roof assemblies also include ferrous or copper shingles or sheets metal sheets and shingles clay or concrete roof tile or slate installed on noncombustible decks or ferrous copper or metal sheets installed without a roof deck on noncombustible framing. It also serves as a key differentiator for products within the roofing market. This class for roof will qualify homeowners for a discount with most insurance companies. Class a roof assemblies include minimum 16 oz sq.

A stone coated steel roof costs about 2 1 2 times as much as a standard asphalt roof. Roofing materials are changing for the better becoming more and more advanced each year. 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. 0 0416 kg m 2 copper sheets installed over combustible decks.

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. Assembly rated class a roof coverings are those that meet class a standards when combined with other elements. A class 1 roof has undergone a series of tests that evaluate the entire roof assembly including the external spread of flame test utilized for the class a rating.