Ul Class A Roofing System

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.

Ul class a roofing system.

Any ul class a b or c roofing system tgfu or prepared roof covering tfwz layer 2 roof sheathing. Due to the materials used in their construction most asphalt shingle roof assemblies have a class a fire resistance rating. To achieve a class a rating the roof must be effective against severe fire exposure. 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.

Certification database ul product iq access ul certification data on products components and systems identify alternatives and view ul guide information with product iq. Class a roof assemblies shall be permitted for use in buildings or structures of all types of construction. 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. The details for the manufacturers system typically include the following information.

Class a is the highest level. 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. Class b designates resistance to relatively moderate fire test. Grade c d or sheathing.

Class a roof assemblies and roof coverings shall be listed and identified as class a by an approved testing agency. It is not limited to thickness or incline restrictions like most foam roofing systems. Ul 790 and astm e 108. The ul 790 classification e g.

Class a designates resistance to relatively severe fire test exposure. 15 32 thick wood structural panels min. There are three levels of fire resistance. Class a roof assemblies are those that are effective against severe fire test exposure.

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. This is proven if it can. It also serves as a key differentiator for products within the roofing market. This system is classified for all types of roof deck construction for fire resistive construction methods.

Ul class a industrial roof system.