Grab a flashlight and inspect your attic during the winter.
Attic soffit vents restricted.
Because the soffit vents are on the attic floor it s easy to cover them with insulation.
Roofing attic ventilation.
For an attic without soffit vents you may have the option to use gable vents instead.
Air flows in through the soffit vents and out through the roof vents.
More ways to filter.
Vents come in various styles.
Normal vented air likes to enter the attic lower down near the bottom third of the attic and as it passes through it will exit higher up near the top third of the attic space.
Typically you would have a gable vent on each end of the attic.
You can remove insulation from inside the attic or from underneath the soffits.
Enter square footage calculate or enter the square footage of the attic or area to be vented.
Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator.
The photograph at page top shows an attic whose intake venting is blocked by fiberglass insulation.
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For the best results place roof ventilation near the roof s peak and soffit vents in the eaves.
Once it s out of the way.
If you don t know how your roof vents work or if you re unsure about your attic ventilation in general you should talk to a roof inspector about your current system and any inherent weaknesses that may be at.
If you see dampness or frost you need better roof ventilation and some attic vents.
These vents allow outside air to enter the attic at the lowest point of the roof along the underside of the eave.
Almost all homes are fitted with some kind of roof vents at the peak of the roofline be it individual roof vents hip roof ventilation and many homes have gable vents as well.
They re most effective when used in conjunction with a continuous ridge vent.
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Most effective ventilation uses a ridge and soffit continuous ventilation system but even these designs can vary from roof to roof.
Blocked soffit vents invites attic or roof cavity moisture condensation mold.
Soffit vents come in several sizes and styles including small round discs and rectangular grilles.
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