Exterior Roof Ventilation

Help protect your roof system from premature deterioration by installing a properly balanced attic ventilation system consisting of cobra exhaust vent at the ridge and adequate intake ventilation at or near the soffit areas of your roof.

Exterior roof ventilation.

In cold climates the primary purpose of attic or roof ventilation is to maintain a cold roof temperature to control ice dams created by melting snow and to vent moisture that moves from the conditioned space to the attic ventilation acts to bypass the vapour barrier created by most roof membranes. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic. Hot air exhaust vents located at the peak of the roof allow hot air to escape. Co llc 18 in.

Under eave soffit vent 14 undereave vents 1 wall louver vent 3 intake exhaust. The louvered construction allows the vent to provide adequate airflow. They help air flow out of the attic and prevent snow and moisture to enter the attic this adds years to the life of the roof. Apply asphalt roof.

Soffit mount 1 soffits 17 ventilation product type. Start in the attic and drill a hole through the roof in the desired vent location. More ways to filter. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

Master flow 15 amerimax home products 1 deflect o 1 gibraltar building products 1 mounting position. Co llc 18 in. Installing a vent hood on the roof. Paintable wood rectangular siding vent features an attractive wood design that is fully paintable or stainable to match your exterior trim.

Vent exhaust fans through a roof hood roof vent hood details. Beyond the decreased capacity for insulation when venting the roof deck venting the roof deck or the attic has some other drawbacks worth considering. In cold climates snow can enter the soffit and ridge vents melt and potentially cause rot. Help protect your roof system from premature deterioration by installing a properly balanced attic ventilation system consisting of cobra exhaust vent at the ridge and adequate intake ventilation at or near the soffit areas of your roof.

However to function effectively these vents rely on strong winds. Rather than being installed on the roof gable vents are installed on the exterior side wall of the house near the roof ridge. To be sure your roof is getting enough ventilation there are simple calculations that you can follow. Required ventilation openings shall open directly to the outside air and shall be protected to prevent the entry of birds rodents snakes and other similar creatures.

Openings in roof framing members shall conform to the requirements of section r802 7. R806 2 minimum vent area.