Install Bathroom Exhaust Fan Roof

Draw a mark on the bathroom ceiling where you d like to install the vent fan.

Install bathroom exhaust fan roof.

Access the attic and bring your light cordless drill screws and bathroom fan housing. Install the roof vent install the roof vent by sliding the top flange under the shingles above it and resting the bottom flange on the shingles below. Also it helps to get a fan that s the same size as your existing fan so you won t have to adjust the size of the ceiling hole. Try to keep it close to the fan location.

Make sure to check my other vide. You can use the existing switch wires and ductwork. Climb into the attic and clear away any insulation from around the hole. You mount a switch in each bathroom.

Apply roofing adhesive on the underside of the flanges to seal. Start in the attic and drill a hole through the roof in the desired vent location. Leave the drill bit sticking through the roof so you can find the hole. Attach the bathroom fan to the joist.

A single exhaust exits through the roof figure a. This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo. Most roof overhangs today have continuous soffit ventilation strips. Secure the vent flanges with roofing nails before installing the shingles.

For optimum performance locate it between the shower and the toilet. This system is quiet too. The installation is easiest if you re replacing an existing fan. Sinnisjinsulator video includes how to and tips on attic bathroom fans and proper placement and insulation of exhaust hose.

The next best location for a bath fan cap is a wall that s at least three to five feet from a roof overhang. Place the fan in the cut out hole so that the bottom edge of the fan is flush with the bottom of the ceiling drywall. Use the information below to select a fan. You will need a partner for this step as you cannot see the ceiling from this position.