It is important to have a balanced ventilation system using equal amounts incoming and outgoing air.
Mold in attic from bathroom fan.
The bathroom vent fan is a major weapon against bathroom mold.
Above all else a bathroom ventilation fan should be connected to a duct capable of venting water vapor and odors into the outdoors.
The fan s job is to move moist air outside the house before it can condense and permeate into mold prone materials.
If you eliminate just one of these elements mold will starve and die.
Dryer vents plumbing vents kitchen or bathroom fans vented into the attic.
Bathroom exhaust fans perform an important function by removing excess moisture from your home.
Options for venting a bathroom exhaust fan include best to worst.
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.
Moisture food and warmth.
Mold needs 3 things to grow.
Bathroom fan vent code requirements include no venting to attic areas to help reduce mold or structural problems.
Most building codes require that bathrooms be equipped with active ventilation in the form of a ventilation fan.
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.
In many cases moisture from bathroom fans is the primary source of attic mold infestation.