Bathroom Vents To Attic Or Outside

Mold in a bathroom can be caused by a plumbing leak but splotchy stains on wall or ceiling surfaces usually indicate inadequate ventilation too much moisture in bathroom air.

Bathroom vents to attic or outside.

So can you vent a bathroom exhaust fan into the attic. There are really only three venting options. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. 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.

The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Surprisingly bathroom fans are not required by some building codes. No matter the location of the bathroom you can vent the exhaust fan through the wall. You may be able to configure a short route.

You should never exhaust the bathroom fan directly into the attic. All municipalities have different requirements but some do not draw a hard line on requiring exhaust fans. We explain how to install bathroom exhaust fans or vents the vent ducting. The location of the bathroom will determine how extensive the ductwork will be.

But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. Bath vent fan installation building codes bath vent fan troubleshooting bath vent fan repair. This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo.

A 3 or 4 inch duct connects to the outlet on the fan housing and runs to a side wall or to the roof and connects to a vent cap that allows the. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. 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. A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan.

How to install a bathroom vent fan. Options for venting a bathroom exhaust fan include best to worst. No you cannot vent your bathroom exhaust fan into the attic. This can also cause mold to form on wood or insulation in an attic space above a bathroom.

Bathroom code does address the issue of moving odor and moisture laden air from the bathroom to the outside.