How To Install Roof Ventilation Fan

It can be controlled by a thermostat or moisture monitor.

How to install roof ventilation fan.

You also want a fan that s appropriate for the square footage of your attic space by checking the manufacturer s specifications. Attic ventilation fans also tend to be quite energy efficient in terms of their own operation. This old house general contractor tom silva shows how to properly install a roof mounted bath fan vent. Hot air exhaust vents located at the peak of the roof allow hot air to escape.

The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Even if your roof already has ridge vents and plenty of ventilation built in it s a good idea to install gable fans or roof fans to help blow hot humid air out of the attic. When the fan is securely mounted carry it over to the vent and nail. To save time use an existing roof or gable vent to install your new attic fan.

Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. Whole house fans tend to have higher overall costs than attic ventilation fans. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.

Mark the roof venting locations from the attic where you can see the rafters and avoid placing roofing vents over them. A powered exhaust vent is much like a roof mounted exhaust fan. To install an attic fan over a gable vent in your attic trace the body of the fan onto a piece of plywood that s wide enough to mount on the studs on each side of the vent. Adding attic vents is a simple matter of cutting holes and installing vents.

Photos 1 6 show how it s done. But before you cut any holes plan the locations of the attic vents. Pricing for attic fan installation varies depending on fan type and its location. See below for a shopping list and tools subscribe.

On average labor costs run between 100 300 and the fan itself may range from as little as 50 to more than 500.