Fire Rated Attic Vents

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.

Fire rated attic vents.

Today o hagin has local and national testing approvals. Vulcan vents are the perfect fire stopping vent for your home. Vents are vulnerable to wildfires when embers and flames enter into the enclosed attic or crawl spaces and ignite combustible materials in those areas. Is recognized for its industry leading efforts in research development and testing.

This is a photograph from a test conducted in a fire research laboratory. It shows fire penetrating a frieze block vent with flames entering into what would be the attic. These patented attic vents are accepted for use by many local fire officials for installation in wildland urban interface wui zones. When used in conjunction with lower soffit or eave vents rapid cooling and venting of the attic can take place.

The conmpany s soffit and eaves vents prohibit flame intrusion through a structure s ventilation system. As seen on this old house vulcan vents are designed to be fire and ember safe. Use manufacured and ca approved vents see below to retrofit existing attic soffit basement foundation and gable vents where possible. Quick reference as well as more pics and info for gable vents.

Under eave soffit vents important airflow notes. The intumescent coating is designed to quickly swell up and close off when exposed to high heat. When a wildfire nears and the vent reaches the critical temperature the intumescent coating on the matrix structure expands creating an insulating barrier from fire and embers. An ember catching screen blocks dangerous embers during ember attacks long before the fire arrives.

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. Gables like dormers are vertically oriented vents best placed as high as possible. Approaching fire generates heat whichtriggers the vulcan vent to close. Alternatively cover all existing vent openings with 1 8 inch or 1 16 inch wire mesh.

Vulcan vents are listed by the california state fire marshal under category 8165 of the building material listing program. O hagin universal direct deck attic vents this attic vent provides maximum net free ventilation area nfva and is designed for mop in or dry in applications using tile shingles slate or shake.