Bathroom Vents Into Attic

Bathroom exhaust fans perform an important function by removing excess moisture from your home.

Bathroom vents into attic.

How to repair a bathroom fan. While this may seem obvious homeowners may out of convenience direct the vent into either of these locations. You d often blow air from one bathroom into the other and local building inspectors wouldn t approve it. I mean it s right into my insulation.

This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo. Bath vent fan installation building codes bath vent fan troubleshooting bath vent fan repair. It s not vented out by any means. Can you vent a bathroom exhaust fan into the soffit vents.

Bathroom ventilation codes require a bathroom exhaust fan to vent to the exterior not the attic for health and structural reasons. How to install a bathroom vent fan. And i have that problem regarding that. Bathroom fan vent code requirements include no venting to attic areas to help reduce mold or structural problems.

If you vent the bathroom exhaust fan to close to the soffit vents which are vented plates under your homes outer edge and roof your home the air can be sucked right back into the attic from the soffit. The problem with this approach is that all of the moisture in the air goes onto the wood sheathing insulation wood rafters and wood ceiling joists which can lead to mold growth and rot. The water will condense and drip into the insulation below and perhaps into the house. I was listening to one of your shows earlier and you were talking about how the bathroom vents are vented into the attic.

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. But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms. No you cannot vent the bathroom exhaust fan into the soffit vents. This article series explains why bathroom vent fans are needed and describes good bath vent fan choices necessary fan capacity and good bath vent fan and vent duct installation details.

We explain how to install bathroom exhaust fans or vents the vent ducting. It cannot move air to a crawlspace or attic. Special bathroom fan roof vents with an internal damper that opens only when the fan is blowing will send moist air outdoors and keep cold air out of the house.