Fire Rated Roof Vents

Block any spaces between roof decking and covering to prevent embers from catching.

Fire rated roof vents.

Cover all vent openings with 1 16 inch to 1 8 inch metal mesh. An ember catching screen blocks dangerous embers during ember attacks long before the fire arrives. Quick reference as well as more pics and info for dormer vents. Vulcan vents are the perfect fire stopping vent for your home.

Do not use fiberglass or plastic mesh because they can melt and. 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. Climate considerations should be taken into account when considering dormers.

The prices of roof vents also go up when manufacturers add extra features to the vents. The intumescent coating is designed to quickly swell up and close off when exposed to high heat. The best ventilation solution for tile roof applications in areas where rain or snow may be a concern. Several vents have been accepted for use by the office of the state fire marshal these vents can be used in applications where ember and flame intrusion resistance is required.

Under eave soffit vents important airflow notes. 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. 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. Build your roof or re roof with materials such as composition metal or tile.

Dormers much like gables offer large areas of ventilation in a vertical orientation and are best when used as high up as possible on the roof. This is a photograph from a test conducted in a fire research laboratory. I mentioned five excellent roof vents in this article but my favorite has to be the lippert components 389381 white roof vent because of the patented 360 siphon design it has adopted. These vents typically use a combination of screening and other design features such as baffles or intiumescent materials to resist intrusion of embers and flames.

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.