It shows fire penetrating a frieze block vent with flames entering into what would be the attic.
Fire rated roof vent intake.
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.
Made with an internal weather filter.
Of net free area per linear foot.
This is a photograph from a test conducted in a fire research laboratory.
Smartvent also satisfies all ridge vent and exhaust vent requirements.
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.
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.
Use manufacured and ca approved vents see below to retrofit existing attic soffit basement foundation and gable vents where possible.
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.
Louver openings are sized to minimize insect infiltration and windblown debris.
Ember and fire resistant vent u s.
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.
Vents are vulnerable to wildfires when embers and flames enter into the enclosed attic or crawl spaces and ignite combustible materials in those areas.
Today o hagin has local and national testing approvals.
The best ventilation solution for tile roof applications in areas where rain or snow may be a concern.
Available with and without nails.
The inflow vent is an ideal solution for roofs without soffits or used as a supplemental intake on roofs requiring additional ventilation.
We have been using smartvent for years as a great solution for inadequate ventilation on our customer s homes.
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.
Wind driven rain resistant to 110 mph.
Each vent has 16 sq.
Patent application 11 875 034 filed october 19 2007.
Common 1 4 screens are ineffective and should be replaced or retrofitted.
Alternatively cover all existing vent openings with 1 8 inch or 1 16 inch wire mesh.
An ember catching screen blocks dangerous embers during ember attacks long before the fire arrives.
As seen on this old house vulcan vents are designed to be fire and ember safe.
Class a fire rated.
Is recognized for its industry leading efforts in research development and testing.
Smartvent is rated at 9 nfa ft.
An air intake or exhaust vent for an external roof or wall of a building.
