How To Ventilate Attic Soffits

For an attic without soffit vents you may have the option to use gable vents instead.

How to ventilate attic soffits.

For the best results place roof ventilation near the roof s peak and soffit vents in the eaves. Typically you would have a gable vent on each end of the attic. Air flows in through the soffit vents and out through the roof vents. The soffit vents allow convective air movement from the soffits of the residence to the ridge vent.

If you see dampness or frost you need better roof ventilation and some attic vents. 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. The soffit vents are now installed but you still need to make sure there s no insulation blocking the new vents. In addition insulation baffles must be installed at the point where the attic floor meets the roofline to prevent the attic insulation from migrating into the cavities and restricting the airflow from the soffit vents.

Grab a flashlight and inspect your attic during the winter. 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. If the attic is insulated with fiberglass batts just pull back any that are blocking the flow of air.