Bliwing In Roof 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.

Bliwing in roof vents. 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. Such as epdm tpo pvc asphalt shingle cedar shake slate tile and more. Flat roof vents have no moving parts to break or squeak but don t vent as much air as wind driven vents. Ridge vent is the metal capping that sits across the roof line on many homes.

N attic ventilation can reduce the temperatures of roof coverings which will typically prolong the life of the roof. And on occasion a hard driving rain with whipping wind will cause roof vents to leak water. Roof vents are manufactured and engineered for every climate zone and are customizable for every type of roof. 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.

While allowing the cooler air from outside to be sucked back into the attic area by the intake vents. N soffit vents n ridge vents n gable end vents n off ridge vents n gable rake vents n turbines n adequate ventilation of attics is generally re quired to promote the health of wood structural members and sheathing in the attic. Unfortunately blow in insulation can drift. Wind driven roof vents will pull more air from the attic but only when the wind is blowing.

Roofers often complain that roof vents battered by storms can fail allowing blowing snow and rain to penetrate the attic. Ridge cap allows the hot air from your attic to escape. Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic. 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.

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. These vents are installed in the soffit the enclosed portion under the roof overhang and permit air to flow up under the roof and into the attic. 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. But some roof air vents sit fairly flat to the roof with a mushroom style hood and unprotected sides.