Install Bathroom Exhaust Fan Roof

Secure the vent flanges with roofing nails before installing the shingles.

Install bathroom exhaust fan roof.

Access the attic and bring your light cordless drill screws and bathroom fan housing. This system is quiet too. Start in the attic and drill a hole through the roof in the desired vent location. A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan.

You mount a switch in each bathroom. 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. You will need a partner for this step as you cannot see the ceiling from this position. 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.

The next best location for a bath fan cap is a wall that s at least three to five feet from a roof overhang. Draw a mark on the bathroom ceiling where you d like to install the vent fan. Climb into the attic and clear away any insulation from around the hole. Attach the bathroom fan to the joist.

Sinnisjinsulator video includes how to and tips on attic bathroom fans and proper placement and insulation of exhaust hose. Use the information below to select a fan. 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. For optimum performance locate it between the shower and the toilet.

Leave the drill bit sticking through the roof so you can find the hole. From up on the roof use a jigsaw or reciprocating saw to cut a 4 in. A single exhaust exits through the roof figure a. Most roof overhangs today have continuous soffit ventilation strips.

This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo. The installation is easiest if you re replacing an existing fan. Make sure to check my other vide. Apply roofing adhesive on the underside of the flanges to seal.