Ul 790 Class A Roof

Class a roof assemblies shall be permitted for use in buildings or structures of all types of construction.

Ul 790 class a roof.

Ul developed a test to rate the strength of roofing materials. Astm e108 standard test methods for fire tests of roof coverings and ul 790 standard test methods for fire tests of roof coverings the tests provide the basis for the class a b and c designations. Each requires a spread of flame test and a burning brand test. This test standard and closely related standards such as underwriters laboratories ul 790 and uniform building code 15 2 is used to determine the ability of a roof system to hinder the horizontal spread or vertical penetration of an.

Ul 790 class a assemblies home resources ul 790 class a assemblies. Ul standard ul 790 edition 8 standard for standard test methods for fire tests of roof coverings edition date. Class a roof assemblies are those that are effective against severe fire test exposure. Any ul classified type g1 g2 or g3 base ply sheet type 15 20 or 30 felt or ul classified prepared roofing accessory or gcp applied technologies inc.

Ul provides the knowledge and expertise to help consumers make informed decisions on products that affect their daily lives. April 22 2004 ansi approved. Class a roof assemblies and roof coverings shall be listed and identified as class a by an approved testing agency. Spread of flame ul 790 burning brand testing ul 790 impact test ul 2218 intermittent flame testing ul 790 solar reflectance thermal emittance coating thickness astm c1549 and c1371 wind resistance astm d3161 wind uplift ul 1897 10x10 and 12x24 deck wind uplift ul 580.

This test is called the ul 2218 impact rating. Includes roof coverings which are effective against moderate fire exposures. Roof assemblies resistances to exterior fire exposure are typically tested and classified using two similar test methods. Get free shipping on qualified class a roof shingles or buy online pick up in store today in the building materials department.

Ul 790 evaluates the ability of the roof assembly to resist a simulated fire. Coated steel or aluminum roofing panels. The 2012 and 2015 ibc in section 1505 of chapter 15 states that fire classification of roof assemblies is based on two tests astm e108 and ul 790 that are fundamentally identical.