Fire Rated Attic Vents

Vulcan vents are listed by the california state fire marshal under category 8165 of the building material listing program.

Fire rated attic vents. 81 sqin net free venting area. The intumescent coating is designed to quickly swell up and close off when exposed to high heat. This is a photograph from a test conducted in a fire research laboratory. The importance of ember and flame entry into vents during wildfires has resulted in the development of commercially available vents designed to resist the intrusion of embers and flame and recomendations for new or retrofit vents to protect existing openings.

The conmpany s soffit and eaves vents prohibit flame intrusion through a structure s ventilation system. Ember entry through vents can result in ignition of combustible materials in the attic and result in a building burning from the inside out. The core of our fire and ember safe vents are manufactured out of hi grade aluminum honeycomb and coated with an intumescent fire proof coating. Vents are vulnerable to wildfires when embers and flames enter into the enclosed attic or crawl spaces and ignite combustible materials in those areas.

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. 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. When used in conjunction with lower soffit or eave vents rapid cooling and venting of the attic can take place. Used in outer wall gable area.

For flush mount over wood etc. These patented attic vents are accepted for use by many local fire officials for installation in wildland urban interface wui zones. Gables like dormers are vertically oriented vents best placed as high as possible. Vulcan vents are the perfect fire stopping vent for your home.

Under eave soffit vents important airflow notes. Shipping leadtime 4 6 business days 93 00 sale 71 95. Vulcan 14 wide x 18 inch high fire stopping vent with flat front flange face. An ember catching screen blocks dangerous embers during ember attacks long before the fire arrives.

Approaching fire generates heat whichtriggers the vulcan vent to close. Quick reference as well as more pics and info for gable vents. It shows fire penetrating a frieze block vent with flames entering into what would be the attic. As seen on this old house vulcan vents are designed to be fire and ember safe.