Roof Venting A Bathroom Fan

Options for venting a bathroom exhaust fan include best to worst.

Roof venting a bathroom fan.

The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. From the roof find the nail and use the utility knife to cut roof shingles from around the nail. The truth about attic bathroom venting.

From inside the attic drive a nail through the roof directly above the bathroom vent fan. I recommend that my clients vent their bath fans out a gable wall if at all possible when not using an hrv or erv that is. Bathroom exhaust fans perform an important function by removing excess moisture from your home. A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan.

Slide a flat pry bar underneath the shingles around the nail to break the weather seal. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms. If you vent through the roof condensation will drip back into the interior.

I would by lying if i told you that it will cause problems it may be totally fine. The lowdown on venting your bath fan into an attic is that it can be done but it should terminate on the outside. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. Bathrooms must have windows when this section is adopted by a community it essentially says that for venting purposes bathrooms must have windows that open.

Bathroom exhaust fan venting code summary section r303 3. If you vent through a soffit where attic vents are often located the moisture will get sucked back up into the attic or roof venting. It eliminates the need for routing ductwork through the house and these fans usually dry the bathroom more quickly. This involves running ductwork from the fan usually though an attic and out through the roof.

Center the nail between two rafters. When venting a bathroom exhaust fan make sure to vent the air to the outside rather than into your attic where it can cause mold and mildew to form.