Fire Rated Roofing Systems

Fire ratings for roofs are classified as either class a class b class c or are unrated if a roof covering cannot meet the requirements for any of these classifications.

Fire rated roofing systems.

Firestone building products is a leading manufacturer of high performing roofing systems for commercial industrial and residential roofing applications. These tests may be conducted at ul inc fm global or any other certified testing laboratory. The prevent line of polyester reinforced or composite fire rated cap sheets provide an extra protective coating and line of defense to iko s premium asphalt based roofing systems. Class a is the highest rating offering the highest resistance to fire and unrated is the worst.

Astm e108 defines fire test methods for roof coverings. These assemblies need to meet fire and smoke safety and environmental sustainability requirements. In addition to being fire resistant classic metal roofing systems products carry the added. 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.

One goal of this column will be to increase your understanding of each of these ratings and what the rating does and does not do for your peace of mind. The different roofing materials that are available for installation on your home are all evaluated for their fire resistant capabilities. Your roof can have one of four fire ratings classifications. Since 1980 firestone roofing systems have been installed on hundreds of thousands of roofs worldwide.

Building code fire resistance requirements building codes establish fire resistance requirements for roofs based on the type of construction e g concrete steel wood for the building. Class a class b class c or unrated. Our roof systems are rated by code for external fire resistance under deck exposure and time temperature resistance. Classic metal roofing systems the leader in producing fire safe roofing for residential applications manufactures products that are 1 20 the weight of most tile products and eligible for class a b or c fire ratings as determined by roof preparation.

The highest rating meaning the most fire resistant is classified as class a and is able to withstand severe fire exposure. The rating scale is relatively simple and is rated from a to c. To learn more about our roofing systems click on one of the product boxes below. Iko fire rated roofing systems include those designed to handle extreme temperatures and to mitigate fire.

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 wall floor and ceiling assemblies provide the necessary fire and smoke barriers to create compartmentalization during a fire safeguarding against the spread of fire and smoke within a building or to and from a building. How are roofs rated.