Attic Dormer Vents Fire Resistant

Dormer vent dormer vents allow heat to rise and escape out of the vent itself.

Attic dormer vents fire resistant.

Except for corrosion resistant metal language chapter 7a doesn t restrict through roof vents. These patented attic vents are accepted for use by many local fire officials for installation in wildland urban interface wui zones. 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. 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.

Low profile dormers are often called eyebrow vents. 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. Important for proper cooling of the attic dormer vents are a common entry point for embers. 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.

It shows fire penetrating a frieze block vent with flames entering into what would be the attic. 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. Vents accepted by the osfm have provided testing information that was conducted by an accredited fire testing laboratory. Half round dormers like the one below often are often called round dormers.

Most manufacturer warranties require venting of the roof system to get the proper life expectancy of your roof. Galvanized wire mesh over the 12 in. Rough opening prevents birds and large insects from entering attic space. Climate considerations should be taken into account when considering dormers.

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. Quick reference as well as more pics and info for dormer vents. 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.

Types of ventilation venting in your roof system is quite important. 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. By replacing your existing vents with an embers out vent your home will have an added layer of protection from the elements. From entering through the vent into the roof.

An ember catching screen blocks dangerous embers during ember attacks long before the fire arrives. Our half round dormer vents are attractive long lasting and fire resistant.