Bathroom Fan Vents To Attic

These stem vents should be properly connected to the bathroom ducts to ensure that moisture is traveling to the exterior not the attic space.

Quiet cool whole house fan lowes. The lowdown on venting your bath fan into an attic is that it can be done but it should terminate on the outside. Surprisingly bathroom fans are not required by some building codes. Options for venting a bathroom exhaust fan include best to worst.

Vent your bath and kitchen exhaust fans through the roof through a special roof hood. Bathroom code does address the issue of moving odor and moisture laden air from the bathroom to the outside. Yes venting into another part of the house such as the attic simply shifts moisture around and does not improve iaq or prevent structural damage.

Likewise kitchen fans should vent through vents in the roof moving moisture and odors from the interior to the exterior. 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. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.

But while you cant have two fans with one vent you can make one fan and one vent serve two bathrooms. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. The truth about attic bathroom venting.

Bathroom ventilation codes require a bathroom exhaust fan to vent to the exterior not the attic for health and structural reasons. No you cannot vent the bathroom exhaust fan into the soffit vents. In fact i have seen numerous houses that havent yet had signs of mold with the bath fan venting incorrectly.

I would by lying if i told you that it will cause problems it may be totally fine. A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan. All municipalities have different requirements but some do not draw a hard line on requiring exhaust fans.

Can you vent a bathroom exhaust fan into the soffit vents. A bathroom fan should exhaust warm moist air through sealed insulated ducts so that walls and ceilings are not exposed to condensation or leaked moisture. 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.