Mold In Attic From Bathroom Vent

Telltale black mold stains typically result from this ventilation error.

Mold in attic from bathroom vent.

Not all building jurisdictions require bathrooms to have an exhaust fan if the bathroom has an openable window that has 1 5 square foot of open area when open. Bathroom fan vent code requirements include no venting to attic areas to help reduce mold or structural problems. Black mold in your air vents can cause a variety of unpleasant symptoms and health problems. If you eliminate just one of these elements mold will starve and die.

In many cases moisture from bathroom fans is the primary source of attic mold infestation. Bathroom ventilation codes require a bathroom exhaust fan to vent to the exterior not the attic for health and structural reasons. Moisture food and warmth. The symptoms may vary from person to person and can also depend on the length of exposure and the amount of spores inhaled.

Symptoms to watch for. Dryer vents plumbing vents kitchen or bathroom fans vented into the attic. First and foremost the fan must be ducted to the exterior not to the attic. Common symptoms and health problems caused by black mold may include.

The most common cause of attic mold by far is blocked or insufficient ventilation of the attic space. Bathroom ventilation done right fortunately there are several ways to make sure the bath fan is used properly to evacuate moist air. It is important to have a balanced ventilation system using equal amounts incoming and outgoing air. Mold in air vents.

Mold needs 3 things to grow. 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. A greater danger is posed by bathroom fans that vent directly into the attic or soffit areas rather than directly outside.