Fire Rated Roof Systems

Fire ratings may pertain to resistance to fire from above the roof system the familiar class a b or c ratings or fire exposure from the building interior the underside of the roof deck.

Fire rated roof systems.

Ib roof systems has roofs still performing after more than 30 years. Some roof coverings rely on an underlying material or special installation techniques to improve their fire rating. These assemblies need to meet fire and smoke safety and environmental sustainability requirements. We must emphasize however that individual roof components are not rated at all.

Class a fire rated to better protect buildings and content. Roofing systems must meet or exceed building codes and insurance requirements. Class a fire rated tpo membranes and epdm can achieve underwriters laboratories ul class a fire resistance listings by adding fire retardant chemicals during the manufacturing process. One goal of this column will be to increase your understanding of each of these ratings and.

Designed to handle extreme temperatures these reinforced fire rated cap sheets provide an extra line of defense and protection for building inhabitants. Building code fire resistance requirements. Fire ratings for roof coverings that require an additional material are typically referred to as a by assembly as opposed to a stand alone fire rating. Roofing systems are rated by realistic fire tests.

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. These listings are short summaries to serve as a. 6 usg fire resistant assemblies test certification test conditions and fire and sound tested assemblies listed in this selector are based on characteristics properties and performance certificationof materials and systems obtained under controlled test conditions as set forth in the appropriate astm standard in effect at the time of test. Understanding roof fire ratings class a roofing.

Tested roof systems are fire classified class a b or c where the most fire resistant roof assemblies are class a and class c is least resistant. Building codes establish fire resistance requirements for roofs based on the type of construction e g concrete steel wood for the building. How are roofs rated. Ib pvc provides the longest most durable solution in the industry and offers material labor and material and total systems warranties.

Astm e108 defines fire test methods for roof. Customer choice of insulation since single ply membrane roofing does not include the insulation factor as a customer you have more options to choose from to insulate your facility s roof. Non wicking reinforcement eliminates edge treatments.