Fire Rated Roof Vents

Self closing ridge soffit eave vents for fire protection.

Fire rated roof vents.

Climate considerations should be taken into account when considering dormers. 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. Vents are vulnerable to wildfires when embers and flames enter into the enclosed attic or crawl spaces and ignite combustible materials in those areas. Maestro bal smart bush fire rated roof ventilator csr bradford ventilation.

An ember catching screen blocks dangerous embers during ember attacks long before the fire arrives. 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. Roofing shingles and materials plus factory certified roofers including ratings from real homeowners from north america s largest roofing manufacturer. 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.

Removal of roof space heat and the management of moisture and damaging condensation. 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. This is a photograph from a test conducted in a fire research laboratory. This article describes products research on self closing soffit eaves ridge vents designed to reduce or stop the passage of embers into the roof cavity of a building through the building eaves or ridge during exposure of a building to nearby heat and fire from a forest fire brush fire or adjacent building fire.

It shows fire penetrating a frieze block vent with flames entering into what would be the attic. 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. Quick reference as well as more pics and info for dormer vents. Smart roof ventilator with bush fire rating up to bal 40.

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. As seen on this old house vulcan vents are designed to be fire and ember safe. Under eave soffit vents important airflow notes.