Rated Roof Assemblies

610 mm with 1 25 4 mm type s drywall screws 12 305 mm o c.

Rated roof assemblies.

Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling assembly. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. 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. Astm e108 defines fire test methods for roof coverings.

Helpful documents and resources for usg s roof assemblies can be found on this page. E108 defines the following conditions. 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.

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. These tests may be conducted at ul inc fm global or any other certified testing laboratory. Here you can find drawings for our ul fire rated floor assemblies and ul fire rated ceiling assemblies. 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.

Not all ul rated assemblies that use firestone roofing products are eligible for the firestone red shield red shield medallion or platinum warranty. Have a question about assemblies. The firestone standards guidelines and specifications regarding roofing system components and attachment for the warranty desired must be followed. 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.

The maximum flame spread is 6 feet for a class a rated roof 8 feet for class b and 13 feet for class c. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. 5 8 15 9 mm toughrock fireguard c gypsum board or 5 8 densarmor plus fireguard c gypsum panels applied perpendicular to resilient channels 24 o c.