The photograph at page top shows an attic whose intake venting is blocked by fiberglass insulation.
Attic soffit vents restricted.
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.
Grab a flashlight and inspect your attic during the winter.
Enter square footage calculate or enter the square footage of the attic or area to be vented.
A soffit vent is simply a vent installed into the underside of your home s eaves called the soffit that permits fresh outside air to be drawn up into the attic.
For an attic without soffit vents you may have the option to use gable vents instead.
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.
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.
Master flow 2 in.
Most effective ventilation uses a ridge and soffit continuous ventilation system but even these designs can vary from roof to roof.
Resin circular mini wall louver soffit vent in white 6 pack model rlsc2 view the master flow intake vents 9 28 9 28.
If you see dampness or frost you need better roof ventilation and some attic vents.
For the best results place roof ventilation near the roof s peak and soffit vents in the eaves.
The photograph at left shows severe mold on the underside of roof sheathing in a 1920 s cape cod attic where there was no under roof ventilation.
These vents allow outside air to enter the attic at the lowest point of the roof along the underside of the eave.
Air flows in through the soffit vents and out through the roof vents.
More ways to filter.
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.
Vents come in various styles.
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Roofing attic ventilation.
Once it s out of the way.
Soffit vents come in several sizes and styles including small round discs and rectangular grilles.
An attic s intake vents are most commonly installed directly in the soffit either as individual vents spaced every few feet or as one continuous perforated soffit running the entire length of.
Because the soffit vents are on the attic floor it s easy to cover them with insulation.
You can remove insulation from inside the attic or from underneath the soffits.
