Fire Rated Roof Deck

Firestall roof decking is a nailable class a fire rated structural roof decking made of multiple plies of homasote structural board and a face ply of ul listed n c f r homasote it is designed for use as a structural load bearing decking in residential and commercial buildings that require a class a 25 flame.

Fire rated roof deck.

Ul and fm list many roof ceiling systems in their publications. Most metal panel manufacturers have tested their roof assemblies and most if not all metal panels and shingles can be used in class a fire rated roof systems. This may result in changes in the e 119. The third major roof system fire test is astm e 119.

Building with fire safety in mind. In many states especially in california having a class a fire rated non combustible decking is a must. Roofing systems must meet or exceed building codes and insurance requirements. Densdeck roof boards are fm tested and approved as the only 1 2 gypsum product to meet the.

During the late 1980s there was an outbreak of structural roof deck failures directly related to degradation of frt plywood used as roof sheathing. How are roofs rated. Versashield fire resistant roof deck protection is a key part of the gaf lifetime roofing system 1 and has earned the good housekeeping seal. We provde a design take off including everything you need from the materials design plans installation instructions to the technical support.

The code requirements for fire resistance of metal panels are logical and not overly burdensome. Have there been any significant efforts made to eliminate premature degradation of fire retardant treated frt plywood used as roof decks. Astm e108 defines fire test methods for roof. Rooftop deck system is class a fire rated versadeck rooftop deck systems provide turnkey solutions for your roof deck needs.

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. This is a system test that includes structural members such as beams trusses and roof deck. In some jurisdictions roof assemblies are required to be fire resistant. After all one major concern about building a deck is the potential for fire especially if the area of installation will be near an outdoor grill or fire ring or in a town where the risk of wildfire is.