The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.
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The erv5 model power roof mount vent can move air at a rate of up to 1250 cu.
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When installed as part of a properly balanced when installed as part of a properly balanced attic ventilation system gaf cobra exhaust vent is a shingle over exhaust vent installed at the roof ridge that helps exhaust excess heat and moisture from your attic.
Hot air exhaust vents located at the peak of the roof allow hot air to escape.
Although this isn t always possible in attic crawl spaces you should always insulate the duct to prevent condensation problems.
Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.
Attic ventilation is an ibc building code requirement.
This in turn can help save money on your heating and cooling costs.
Roof vents exhaust heat and moisture leaving the attic cooler and drier.
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Once inside the air heats up and rises higher ultimately exiting through venting at the roof s gables through ridge vents cut into the roof s apex or other vent holes in the roof.
As the air leaves it creates negative pressure behind it sucking in cool air from below into the soffits and creating a self repeating ventilation process.
It is designed for attic spaces up to 2200 sq.
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It can quickly remove a larger volume of hot and or humid air from your attic when compared to static ventilation.
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Roof vent hood details.