Blocking Attic Vents In Winter

Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an.

Blocking attic vents in winter.

The soffit vents are now installed but you still need to make sure there s no insulation blocking the new vents. Believe it or not the cold temperatures outside combined with the warm air down below mean that there can be an excessive amount of moisture building up in your attic during the cold. If the attic is insulated with fiberglass batts just pull back any that are blocking the flow of air. 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.

Blocked soffit vents invites attic or roof cavity moisture condensation mold. Roof ridge vents do work well when there are soffit vents or box vents that help to draw air into the attic. While hardly anybody agrees on the best roof ventilation system everybody agrees some roof vents do hardly any good at all. I have roof vents so i have roof ventilation.

Step 6 remove any insulation from the new vent photo by merle henkenius. Vent these fans through the roof or soffit. Take for example ridge vents. Kitchen and bath fans vented into the attic.

Roof vents allow air to circulate through your attic and exit your home. They also release excess moisture from your attic during the winter. The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available. Rectangular roof vents work best when the wind blows over the top of them rather than into them.

During cold winter months the attic vent fan is not. In the winter the vents will cause the attic to become cold but this should not damage your home or increase the energy use of your home so covering the roof vents is not necessary. Blocking the vents can even harm your home by trapping moisture inside the attic. Adding a ridge vent is a fine idea and don t worry about it competing with the gable vents.

If the gable vents aren t letting in rain or snow leave them alone. The photograph at page top shows an attic whose intake venting is blocked by fiberglass insulation. Trim the last vent to length using aviation snips. You will also discover that this product can work by itself to release moisture from the house which is especially useful during the winter months.

Rectangular roof vents installed on one side of the roof only. Install rectangular roof vents on both sides of the roof. Hot air exhaust vents located at the peak of the roof allow hot air to escape.