Attic Dormer Vents Fire Resistant

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.

Attic dormer vents fire resistant.

Types of ventilation venting in your roof system is quite important. Vents accepted by the osfm have provided testing information that was conducted by an accredited fire testing laboratory. Except for corrosion resistant metal language chapter 7a doesn t restrict through roof vents. Dormer vent dormer vents allow heat to rise and escape out of the vent itself.

Rough opening prevents birds and large insects from entering attic space. There is a small screen inside the vent by the louvers to prevent rodents etc. Still o hagin has submitted testing information to osfm and has been accepted as an ember and flame resistant vent. Fire protection vents and filters prevent fire embers wind driven rain dust debris and nesting animals and rodents from entering your home through the attic vent.

Climate considerations should be taken into account when considering dormers. It shows fire penetrating a frieze block vent with flames entering into what would be the attic. Vent screens don t impede flame entry. Designed to provide maximum airflow into the attic this roof dormer vent has a crimp less face and eliminates the need for sealant or solder.

Half round dormers like the one below often are often called round dormers. Low profile dormers are often called eyebrow vents. 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. As seen on this old house vulcan vents are designed to be fire and ember safe.

1 piece galvanized steel construction and lightweight with louver blades to deflect rain or snow. Important for proper cooling of the attic dormer vents are a common entry point for embers. 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.

Galvanized wire mesh over the 12 in. Most manufacturer warranties require venting of the roof system to get the proper life expectancy of your roof. Quick reference as well as more pics and info for dormer vents. These patented attic vents are accepted for use by many local fire officials for installation in wildland urban interface wui zones.

Wind blown embers can also enter through vents and depending on the ember size and quantity and the amount of combustible materials in the attic or crawl space ignitions can occur. Our half round dormer vents are attractive long lasting and fire resistant.