Mold In Attic From Bathroom Fan

Most building codes require that bathrooms be equipped with active ventilation in the form of a ventilation fan.

Mold in attic from bathroom fan.

It is important to have a balanced ventilation system using equal amounts incoming and outgoing air. The bathroom vent fan is a major weapon against bathroom mold. The fan s job is to move moist air outside the house before it can condense and permeate into mold prone materials. Mold needs 3 things to grow.

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. Mold growth within the bathroom or attic is a clear indication of improper ventilation that must be corrected in order to avoid structural decay and respiratory health issues. Bathroom fan vent code requirements include no venting to attic areas to help reduce mold or structural problems. Bathroom exhaust fans perform an important function by removing excess moisture from your home.

Above all else a bathroom ventilation fan should be connected to a duct capable of venting water vapor and odors into the outdoors. For bath fans it is important to insulate around the vent pipe exiting the fan to prevent moisture from condensing inside the pipe. In many cases moisture from bathroom fans is the primary source of attic mold infestation. Dryer vents plumbing vents kitchen or bathroom fans vented into the attic.

If you eliminate just one of these elements mold will starve and die. Related to 3 above this practice can pump warm moist air into the attic where it can be trapped and begin the cycle of mold growth.