Fire Resistant Roof And Eave Detail

Build your roof or re roof with materials such as composition metal.

Fire resistant roof and eave detail. Since this assembly has been rated as fire resistant in the building code there have. The eave is the part of the roof that extends out beyond the exterior wall. For eave vents follow the guidance in vents. H e n o t md b.

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. When you use option a or b above you will need to provide additional roof venting. 2x backing block. Roof eave fire resistance rating shall be permitted to be reduced to 0 hours on the underside of the eave provided no gable vent openings are installed.

10 low cost retrofits to your home. Homes with wood or shingle roofs are at high risk of being destroyed during a wildfire. U b l p t e h is mo t s l e ive d c g o o. Stucco is often recommended as one of the best materials for boxing in hazardous eaves.

Roof eaves overhangs are a fire hazard but they can be protected with an encasement of fire resistant material. These include boxing in and using open framing open eave. Exposed fire retardant treated wood fascia. Guidance document ignition resistant eaves.

Noncombustible or fire resistant materials. Low cost retrofit list roof. The roof is the most vulnerable part of your home. Embers and hot gases from fire exterior wall cladding fascia gutter rafter underside of roof deck figure 3.

For the fascia use noncombustible or fire resistant materials e g fire retardant treated lumber fiber cement board. Typical construction materials for eaves overhangs and soffits are not fire resistant and are therefore susceptible to ignition by embers and hot gases. An enclosed overhang with a horizontal soffit. There are two ways to detail the underside of the eave the intersection between the exterior wall and the roof.

Once an eave overhang or soffit has ignited fire can spread onto the roof into the attic or onto and through the exterior wall.