Fireproof Attic Vents

Conforms to federal specification qq.

Fireproof attic vents.

Roof and crawl space vents are required by most building codes. Moisture can enter the crawl space from the soil or through the foundation wall from the surrounding landscape. A balanced ventilation system 50 intake ventilation combined with 50 exhaust ventilation can also lower utility bills. It can also enter the attic space if you have a roof leak.

Gables like dormers are vertically oriented vents best placed as high as possible. Build your roof or re roof with materials such as composition metal or tile. This attic vent provides maximum airflow 72 square inches of net free ventilation area nfva without detracting from the aesthetics of the roof design. Block any spaces between roof decking and covering to prevent embers from catching.

This is a photograph from a test conducted in a fire research laboratory. As seen on this old house vulcan vents are designed to be fire and ember safe. Do not use fiberglass or plastic mesh because they can melt and. Quick reference as well as more pics and info for gable vents.

Vulcan vents are the perfect fire stopping vent for your home. Ember and fire resistant vent u s. Gable louvers help provide attic ventilation to exhaust gable louvers help provide attic ventilation to exhaust unwanted heat and moisture which can damage wood or roofing materials. When used in conjunction with lower soffit or eave vents rapid cooling and venting of the attic can take place.

Patent application 11 875 034 filed october 19 2007. An ember catching screen blocks dangerous embers during ember attacks long before the fire arrives. Alternatively cover all existing vent openings with 1 8 inch or 1 16 inch wire mesh. The function of the vents is to remove excess moisture from those spaces.

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. Copper as well as a variety of pre. Cover all vent openings with 1 16 inch to 1 8 inch metal mesh. Common 1 4 screens are ineffective and should be replaced or retrofitted.

Vents are vulnerable to wildfires when embers and flames enter into the enclosed attic or crawl spaces and ignite combustible materials in those areas. The vent is made of an elongate strip of ventilation material providing a plurality of ventilation passageways therethrough permitting air flow therethrough. The intumescent coating is designed to quickly swell up and close off when exposed to high heat. Use manufacured and ca approved vents see below to retrofit existing attic soffit basement foundation and gable vents where possible.

O hagin standard line of attic vents is available for contractor painting in 26 gauge g90 mill finish galvanized steel 0 032 aluminum 16 oz.