Rafter vents ensure the soffit vents are clear and there is a channel for outside air to move into the attic at the soffits and out through the gable or ridge vent.
Insullate roof rafters with gable vents.
A a rafter vent baffle prevents insulation and other debris from clogging the airway preventing proper attic ventilation.
Raft r mate attic rafter vents create a space between each rafter for air to flow freely up the rafters and into the attic.
The answer is rafter venting.
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If insulation is allowed to bunch against the inside slope of the roof between the rafters air will be blocked before it can traverse the attic.
To install the rafter vents staple them directly to the roof decking.
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Rafter vents or insulation baffles install in any rafter space to create narrow gaps that direct fresh air from the soffit vents to the peak of the roof.
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If your attic is going to be converted into livable space then you will need to insulate the roof rafters.
Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place.