How To Replace Roof Vent Fan

Vent your bath and kitchen exhaust fans through the roof through a special roof hood.

How to replace roof vent fan.

The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Rafter vents or insulation baffles install in any rafter space to create narrow gaps that direct fresh air from the soffit vents to the peak of the roof. See below for a shopping list and tools subscribe. For bathroom over 100 sq ft use a large or exhaust fan to circulate the air.

Unlike commercial grade roof vent fans that are belt. This old house general contractor tom silva shows how to properly install a roof mounted bath fan vent. This way you don t have to cut a brand new hole but simply make the hole for the vent larger so it can accommodate the fan. When venting a bathroom exhaust fan make sure to vent the air to the outside rather than into your attic where it can cause mold and mildew to form.

Make sure the fan is centered over the vent with the back of the fan facing in toward the attic. Bathroom exhaust fans perform an important function by removing excess moisture from your home. When the fan is securely mounted carry it over to the vent and nail the plywood into the studs on each side. The first step in figuring out how to install a bathroom fan is cutting a hole based on the size of the fan you need.

Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. And under while medium bath fans work well for bathooms 70 to 100 sq ft. You also want a fan that s appropriate for the square footage of your attic space by checking the manufacturer s specifications. Small bath fans provide adequate bathroom ventilation for 79 sq ft.

These specialty vents do not affect the. To save time use an existing roof or gable vent to install your new attic fan.