Fire Rated Roof Vent Intake

Ember and fire resistant vent u s.

Fire rated roof vent intake.

Each vent has 16 sq. In addition to all the design construction features and color choices of the o hagin standard line this patent pending attic vent features an interior stainless steel diffuser that breaks down wind driven rain and snow before it can enter the attic space. Today o hagin has local and national testing approvals. Class a fire rated.

Smartvent is rated at 9 nfa ft. As part of a ventsure balanced air ventilation system of intake and exhaust the ventsure inflow vent helps reduce heat and moisture buildup that can lead to ice damming and roof deterioration. Louver openings are sized to minimize insect infiltration and windblown debris. Caruso george and bill hendricks.

Smartvent also satisfies all ridge vent and exhaust vent requirements. Patent numbers 6 212 833 6 447 392 issued by the united states patent trademark office. Wind driven rain resistant to 110 mph. 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.

This is a photograph from a test conducted in a fire research laboratory. Common 1 4 screens are ineffective and should be replaced or retrofitted. Of vent opening you have to also adjust the calculation for the degree to which the vent opening is obstructed by mesh screening and any other airflow obstructions such as under sized cuts into the roof deck. Patent application 11 875 034 filed october 19 2007.

We have been using smartvent for years as a great solution for inadequate ventilation on our customer s homes. Of net free area per linear foot. Made with an internal weather filter. From its founding roots as a roofing company over 40 years ago o hagin has grown into a nationally recognized designer and producer of top quality state of the art attic ventilation solutions.

Vents are vulnerable to wildfires when embers and flames enter into the enclosed attic or crawl spaces and ignite combustible materials in those areas. Available with and without nails. The best ventilation solution for tile roof applications in areas where rain or snow may be a concern. As seen on this old house vulcan vents are designed to be fire and ember safe.

It shows fire penetrating a frieze block vent with flames entering into what would be the attic. Is recognized for its industry leading efforts in research development and testing. In general you want 2x as much intake venting at the eaves as outlet at the ridge but keep in mind that if you use a mesh type ridge vent the ridge opening is obstructed by the mesh and the air flow will may be insufficient so you can t just measure the sq in. An ember catching screen blocks dangerous embers during ember attacks long before the fire arrives.

An air intake or exhaust vent for an external roof or wall of a building. Accommodates roof pitches from 3 12 to 16 12.