Dormer vents are half round low profile and dormer retro fit kits are available.
Wui approved roof vents.
I n chapter 7a of the california building code it is now required by law that new homes constructed in the wui wildland urban interface have ember and fire safe vents.
The enforcing agency may accept or approve special eave and cornice vents that resist the intrusion of flame and burning embers.
The vulcan vents are the only fire resistant vents that meet both the wildland urban interface wui and the one 1 hour fire test standards for the exterior of buildings all while providing the proper amount of ventilation to attic and crawl spaces in building structures.
Vents complying with the requirements of section r327 6 2 may be installed on the underside of eaves and cornices in accordance with either.
Eave vents are available in 3 5 x 22 5 5 x 22 3 5 x 14 5 5 x 14 as well as in round configurations.
Cbc 708a crc r337 8.
Vents are vulnerable to wildfires when embers and flames enter into the enclosed attic or crawl spaces and ignite combustible materials in those areas.
Use manufacured and ca approved vents see below to retrofit existing attic soffit basement foundation and gable vents where possible.
These attic vents have been tested and shown to resist the intrusion of wind drive flames and burning embers and additionally are accepted for use by many local fire officials for installation in wui areas.
Vents in soffits eaves or overhangs areas shall be an approved venting device only.
These new guidelines are also mentioned in chapter 49 of the california fire code.
Ventilation openings on the underside of eaves are not permitted unless a sfm approved vent is installed or eaves are fire sprinklered or vent is 12 feet above a walking surface or grade below.
Each vent shall not exceed 144 square inches in area and shall be covered with noncombustible corrosion resistant mesh with openings not to exceed inch or shall be designed and approved to prevent flame or ember penetration into the structure.
Continuous vents for soffits in stucco wood construction foam stucco or retro fits.
Combustible vents on top of roofs may be covered with this material to comply.
A strip vent in a soffited eave and frieze block vents in an open framed eave are shown here.
Windows and exterior doors.
Common 1 4 screens are ineffective and should be replaced or retrofitted.
