Ul Class A Roof

Ul provides the knowledge and expertise to help consumers make informed decisions on products that affect their daily lives.

Ul class a roof.

Class four is an impact standard used to rate roofing materials like shingles and metal materials. Ul developed a test to rate the strength of roofing materials called the ul. Underwriters laboratories ul is a not for profit independent testing organization that was founded in 1894. Class a roof assemblies shall be permitted for use in buildings or structures of all types of construction.

Class a b or c rating is a measurement of the external spread of flame on a roof surface. It also serves as a key differentiator for products within the roofing market. Ul developed a test to rate the strength of roofing materials. This test is called the ul 2218 impact rating.

Class a roof assemblies and roof coverings shall be listed and identified as class a by an approved testing agency. A number of fire test laboratories including underwriters laboratories ul and fm global fmg conduct this test using either the astm e 108 or ul 790 standard. Class a roofing is the preferred choice for any home but this type of roofing is particularly important if you live in an area that is prone to wildfires to achieve a class a rating the roof must be effective against severe fire exposure. Understanding roof fire ratings class a roofing.