Bliwing In Roof Vents

Our roof vents range in size from 3 inches to 48 inches in diameter while collar heights the neck of the roof vents range from 1 inch to 12 inches in height.

Bliwing in roof vents.

Wind driven roof vents will pull more air from the attic but only when the wind is blowing. Unfortunately blow in insulation can drift. Ridge vent is the metal capping that sits across the roof line on many homes. Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic.

N attic ventilation can reduce the temperatures of roof coverings which will typically prolong the life of the roof. Hot air exhaust vents located at the peak of the roof allow hot air to escape. Roofers often complain that roof vents battered by storms can fail allowing blowing snow and rain to penetrate the attic. Roof vents are manufactured and engineered for every climate zone and are customizable for every type of roof.

They range in style from 6 inch round stainless steel vent covers that are placed in the soffit between each rafter to continuous vents that run the entire length of the soffit. Similarly in coastal environments or in regions with lots of rain and wind moisture can be forced into the vents and into the roof assembly. Invented by a roofer to defeat the harsh canadian winters this csa approved static box vent has been independently tested to block 99 99 of snow and rain even in severe storm conditions. And on occasion a hard driving rain with whipping wind will cause roof vents to leak water.

If your roof vent leaks during heavy rain the rain may be blowing up under the hood and into the vent. Flat roof vents have no moving parts to break or squeak but don t vent as much air as wind driven vents. All things being equal wind driven turbine vents also known as a whirlybird roof vent do move more air than flat vents but. In hurricane prone zones with frequent high wind events vented soffit collapse can pressurize a building which can cause windows to blow out and the roof to be blown off.

Such as epdm tpo pvc asphalt shingle cedar shake slate tile and more. But some roof air vents sit fairly flat to the roof with a mushroom style hood and unprotected sides. While allowing the cooler air from outside to be sucked back into the attic area by the intake vents. Vents placed in the underside of the roof s overhang or soffit provide a means for air to get into the attic to help cool it in the summer months.