How To Close Off A Roof Vent

4c climate so primary concern is moisture penetration.

How to close off a roof vent.

The building is currently unconditioned uninsulated and unoccupied. There is a ridge vent but no soffit vents. Position the grate over the attic vent fan. However for my purposes this would be a temporary measure to see if a hot roof or vented roof is preferable.

The answer is don t do that the vents you re seeing are ridge vents on top and a soffit vent on the bottom. Most roof overhangs today. If not the air pathway through the attic will be short circuited flowing only from the gable vents to the ridge vent and not ventilating the lower part of the attic. Following manufacturer s instructions for securing the vent the roofer will likely spread plastic roof cement on the underside of the vent place it over the hole slip the flange under the top side shingles and lay the flange over the down slope shingles.

Be sure to like and subscribe in order to help me bring you more helpful videos filled with tips and tricks i ve learned over the years. Snow can cover the vent outlet and the moist air has nowhere to go. The least expensive method to seal the vent opening is to remove the vent cover from the ceiling cut a piece of cardboard to fit inside the vent cover tape the cardboard in place with polyurethane tape and reinstall the vent cover. Attics need ventilation these openings are by design and critical to avoiding serious roof damage.

If you close them off your attic will overheat in the summer and cause ice dams and water damage if it snows. According to the guy who writes the home improvement column in the local paper if you add a ridge vent you should close off the gable vents. Assuming no part of the vent extends lower than the roof sheathing you can use plywood to close it off but do not drive any nails screws upward through sheathing to secure it you could puncture the felt and or shingles and cause a leak. It is a straight sloped 45 degree roof no hips valleys.

The next best location for a bath fan cap is a wall that is at least 3 to 5 feet from a roof overhang.