How To 6a Roof Around A Box Fan

Learn how easy it is to install an attic fan.

How to 6a roof around a box fan.

Grasp the blades firmly and lift slowly to remove them. Leave the drill bit sticking through the roof so you can find the hole. Trace the outline of the box with a pencil to mark the hole. Here is how to fix a box fan.

See below for a shopping list and tools subscribe. If the blades face the window screen the fan helps pull. Box fans placed in or near windows can help draw in cool air from outside or pull warm air out of a room depending on how they are placed. If there is a c clip pry it off first.

Using a saw cleanly cut all a hole in the ceiling drywall no more than 1 inch larger in diameter than the fan box. Cut a 2x4 to this length and attach a new fan rated outlet box to the midpoint using deck screws. With the 2x4 and box assembled hold them between the joists so the outlet box presses against the back of the ceiling. The motors and bearings on box fans have a tendency to go bad.

Lay the fan down on a flat surface with the exposed face up. Try to keep it close to the fan location. Let the caulk set for the amount of time specified in the instructions that accompany it. Apply caulk from a caulking gun around the fan where it meets the wall.

Some means for collection such as an exhaust fan grease box must be provided. Seal holes in the fan housing with caulk sealing putty or metal tape. Seal around the exterior fan duct vent with caulk or a pre made exterior wall gasket. A grease pipe is usually positioned towards the roof slope to provide single point drainage of water and residue.

Tape strips of plastic tarp using duct tape to the sides top and bottom of the fan to cover the seam between it and the attic wall. It can be placed directly under the exhaust fan trough or an adapter and pipe can be used to carry the water and. How to fix a box fan. This old house general contractor tom silva shows how to properly install a roof mounted bath fan vent.

Box fans work by having a set of fan blades attached on the shaft of a small motor. Start in the attic and drill a hole through the roof in the desired vent location. Seal the exhaust duct to the fan box with approved metal tape or mastic. The motors and bearings on box fans have a tendency to go bad.

Install the fan then seal around the fan with caulk or canned spray foam. From up on the roof use a jigsaw or reciprocating saw to cut a 4 in. 6 roof mounted exhaust fan accessories.