Rated Roof Assemblies

The firestone standards guidelines and specifications regarding roofing system components and attachment for the warranty desired must be followed.

Rated roof assemblies.

Not all ul rated assemblies that use firestone roofing products are eligible for the firestone red shield red shield medallion or platinum warranty. These tests may be conducted at ul inc fm global or any other certified testing laboratory. Gypsum panel end joints located midway between continuous channels and attached to additional pieces of channels 54 1372 mm long with screws 12 305 mm. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.

The maximum flame spread is 6 feet for a class a rated roof 8 feet for class b and 13 feet for class c. Astm e108 defines fire test methods for roof coverings. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. Have a question about assemblies.

Fire partitions must extend from the top of the floor below to the underside of the floor or roof sheathing or to the underside of the fire resistance rated floor ceiling or roof ceiling assembly above. As applied to elements of buildings the fire resistance rating classifies the ability of an assembly to confine and isolate fire within a zone comprised of fire resistance rated walls ceiling and floor assemblies. Refer to our roof ceiling assembly documents which includes ul fire rated roof assemblies for easy guidance through the assembly of a roof or ceiling on your next project. Helpful documents and resources for usg s roof assemblies can be found on this page.

Here you can find drawings for our ul fire rated floor assemblies and ul fire rated ceiling assemblies. The reduction can also apply when code allows for a corridor wall to be a 30 minute assembly. Assembly rated class a roof coverings are those that meet class a standards when combined with other elements. Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling assembly.

E108 defines the following conditions. Over non combustible roof decks such as steel poured gypsum or concrete only the spread of flame on the top surface of the roof system is evaluated. 610 mm with 1 25 4 mm type s drywall screws 12 305 mm o c.