Fire Rated Roof Vent Intake

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.

Fire rated roof vent intake.

Patent numbers 6 212 833 6 447 392 issued by the united states patent trademark office. Alternatively cover all existing vent openings with 1 8 inch or 1 16 inch wire mesh. Today o hagin has local and national testing approvals. Accommodates roof pitches from 3 12 to 16 12.

Smartvent also satisfies all ridge vent and exhaust vent requirements. Patent application 11 875 034 filed october 19 2007. Is recognized for its industry leading efforts in research development and testing. Wind driven rain resistant to 110 mph.

Available with and without nails. As seen on this old house vulcan vents are designed to be fire and ember safe. Ember and fire resistant vent u s. Smartvent is rated at 9 nfa ft.

The best ventilation solution for tile roof applications in areas where rain or snow may be a concern. 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. Of net free area per linear foot. Each vent has 16 sq.

Common 1 4 screens are ineffective and should be replaced or retrofitted. An air intake or exhaust vent for an external roof or wall of a building. It shows fire penetrating a frieze block vent with flames entering into what would be the attic. Made with an internal weather filter.

The inflow vent is an ideal solution for roofs without soffits or used as a supplemental intake on roofs requiring additional ventilation. Caruso george and bill hendricks. We have been using smartvent for years as a great solution for inadequate ventilation on our customer s homes. Louver openings are sized to minimize insect infiltration and windblown debris.

Class a fire rated. 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. 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. 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.

An ember catching screen blocks dangerous embers during ember attacks long before the fire arrives. 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.