Underwriters laboratories ul is a not for profit independent testing organization that was founded in 1894.
Ul class a roof.
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 roof assemblies shall be permitted for use in buildings or structures of all types of construction.
Class a roof assemblies are those that are effective against severe fire test exposure.
It also serves as a key differentiator for products within the roofing market.
Class four is an impact standard used to rate roofing materials like shingles and metal materials.
Understanding roof fire ratings class a roofing.
Class a b or c rating is a measurement of the external spread of flame on a roof surface.
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.
Underwriters laboratories ul is a not for profit independent testing organization that delivers the verified information to help consumers make accurate decisions about products like impact resistant roofing materials.
Ul provides the knowledge and expertise to help consumers make informed decisions on products that affect their daily lives.
Ul developed a test to rate the strength of roofing materials.
Ul developed a test to rate the strength of roofing materials called the ul.