How To Install A Bathroom Exhaust Fan Roof Vent

Center the nail between two rafters.

How to install a bathroom exhaust fan roof vent.

Here is the link to th. From inside the attic drive a nail through the roof directly above the bathroom vent fan. Learn the secrets to running anew exhaust line through the outside wall install a fan and connect the ducting and electrical. I see many questions about leaking bath exhaust vents.

If you vent through the roof condensation will drip back into the interior. Letting the fan exhaust into an open attic will cause moisture buildup on the underside of the roof. Next make sure it is securely fastened on both ends of the pipe. The warm air will exhaust out the duct and enter back into the attic through the soffit vent or ridge vent.

The lower half of the flange sits on top of the shingles. Secure the vent flanges with roofing nails before installing the shingles. Apply roofing adhesive on the underside of the flanges to seal. This involves running ductwork from the fan usually though an attic and out through the roof.

If you have access to the attic the fan can vent either through a gable wall or roof. Apply a bead of asphalt roof cement on the bottom of the vent. For optimum performance locate it between the shower and the toilet. In this video this old house general contractor tom silva shows how to properly install a roof mounted bath fan vent.

Nail the lower corners with roofing nails and tar the heads. In order to accomplish this the roof has to have a hole cut in it. Slide the vent under the shingles so they cover the top half of the vent flange. Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic.

Climb into the attic and clear away any insulation from around the hole. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. Install the roof vent by sliding the top flange under the shingles above it and resting the bottom flange on the shingles below. I recommend replacing the vent pipe with insulated vent pipe.

Avoid venting through a soffit vent or ridge vent. Most bath vents for homes are 3. It is because of this that many builders tend to advise against this method. Next make sure you have one of the new roof exhaust vents on the roof and properly sealed.