This system is classified for all types of roof deck construction for fire resistive construction methods.
Ul class a roofing system.
Class a b or c the deck construction supporting the roofing system combustible or noncombustible any restrictions on the roof incline required or optional if so indicated barrier boards ply sheets and surfacing.
Class b designates resistance to relatively moderate fire test.
Ul 790 and astm e 108.
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.
To achieve a class a rating the roof must be effective against severe fire exposure.
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.
It is not limited to thickness or incline restrictions like most foam roofing systems.
The ul 790 classification e g.
Ul class a industrial roof system.
Class a roof assemblies are those that are effective against severe fire test exposure.
Class a is the highest level.
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.
Experience maximum flame spread of 6 feet.
Class a designates resistance to relatively severe fire test exposure.
The details for the manufacturers system typically include the following information.
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.
Class a roof assemblies and roof coverings shall be listed and identified as class a by an approved testing agency.
Due to the materials used in their construction most asphalt shingle roof assemblies have a class a fire resistance rating.
This is proven if it can.
Fire resistance is based on two test standards.
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.
Certification database ul product iq access ul certification data on products components and systems identify alternatives and view ul guide information with product iq.
There are three levels of fire resistance.
Any ul class a b or c roofing system tgfu or prepared roof covering tfwz layer 2 roof sheathing.
