Bath Fan Vents To Attic

Bathroom exhaust fans perform an important function by removing excess moisture from your home.

Bath fan vents to attic. Otherwise you re inviting a moisture mold rot insect problem in the building. Bathroom fan vent code requirements include no venting to attic areas to help reduce mold or structural problems. A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan. If you vent through the roof condensation will drip back into the interior.

It can be an ugly sight to crawl above a poorly ventilated bathroom s ceiling. The correct way to vent a bathroom fan through an attic is to terminate the vent either to the roof or to the gable wall. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. In order to accomplish this the roof has to have a hole cut in it.

This system is quiet too. You should never exhaust the bathroom fan directly into the attic. Either way the vent will have to go directly to the outside and installed with a vent hood cover. If you vent through a soffit where attic vents are often located the moisture will get sucked back up into the attic or roof venting.

Vent your bath and kitchen exhaust fans through the roof through a special roof hood. No you cannot vent your bathroom exhaust fan into the attic. Bathroom ventilation codes require a bathroom exhaust fan to vent to the exterior not the attic for health and structural reasons. Because the fan is in the attic you ll hardly hear it.

This involves running ductwork from the fan usually though an attic and out through the roof. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. Venting fans pull moisture laden air out of that small space slowing or altogether preventing it from condensing on walls on the ceiling or worst of all in the ceiling. A single exhaust exits through the roof figure a.

Look for the special fans starting at 160 at heating cooling equipment dealers. I recommend that my clients vent their bath fans out a gable wall if at all possible when not using an hrv or erv that is. It is because of this that many builders tend to advise against this method. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside.

The exhaust vent must terminate outdoors.