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.

How are roofs rated. Astm e108 defines fire test methods for roof coverings. 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. External fire exposure class a b or c.

A class a roof is ideal for fire protection and may be required by your building codes depending on your place of residence. 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 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.

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. To learn more about our roofing systems click on one of the product boxes below. Roofing systems must meet or exceed building codes and insurance requirements. Iko fire rated roofing systems include those designed to handle extreme temperatures and to mitigate fire.

Class a is the highest rating offering the highest resistance to fire and unrated is the worst. These assemblies need to meet fire and smoke safety and environmental sustainability requirements. 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 highest rating meaning the most fire resistant is classified as class a and is able to withstand severe fire exposure. Our roof systems are rated by code for external fire resistance under deck exposure and time temperature resistance. 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. Since 1980 firestone roofing systems have been installed on hundreds of thousands of roofs worldwide.

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. 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. The rating scale is relatively simple and is rated from a to c.