Fire Rated Roof Eaves

If noncombustible materials fiber cement panel stucco were used as the sheathing it could also comply.

Fire rated roof eaves.

Roof eaves overhangs are a fire hazard but they can be protected with an encasement of fire resistant material. Stucco is often recommended as one of the best materials for boxing in hazardous eaves. A one inch 2 54 centimeter layer of stucco can easily lend a 1 hour fire rating to a wall source. Use flat horizontal soffits see figure 3 instead of attaching the soffits to the sloped joists which creates sloped soffits.

Under eave soffit vents important airflow notes. Enclose overhangs with soffits that have a minimum 1 hour fire resistance rating to prevent embers and hot gases from making contact with the joists rafters or trusses or the underside of the roof decking. A minimum 1 hour fire resistance rating to prevent embers and hot gases from making contact with the joists rafters or trusses or the underside of the roof decking. Everything you wanted to know about fire rated construction but were afraid to ask.

For more information on eave construction or other fire code requirements please refer to the county s wildland urban interface summary document pds 664 or contact the county s building department fire services division at 858 565 5920. Where when and how to determine if you need it. Stop fire and stay stylish. Eaves without suffixes or with rt are for rafter and truss installation where spacing is commonly imprecise.

Flame ember resistant vents naturally provide less airflow than regular unprotected vents and brandguard vent airflow ratings nfva are approximately 30 that of the same size standard 1 4 screened vent and are listed within each products description.