How To Vent A Bath Fan Through A Metal Roof

Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.

How to vent a bath fan through a metal roof.

The 2 pipes one a 4 master and the other a 3 2nd do not go through the ceiling but into a common box that goes through the roof. The master bathroom and the 2nd bathroom vent through the roof and through the same opening. Take the end of the duct with the connector fitting and attach it to bath vent fan. Bend over the tabs then nail the tabs to the roof.

If you vent through the roof condensation will drip back into the interior. Next use aviation snips to cut slits into the sheet metal sleeve. The bathroom exhaust ventilation fan disperses air through an opening in the fan housing which is usually 3 inches in diameter and ideally faces in the direction of the ventilation system outlet. However there are a few simple tips that will help make the process a little easier and also ensure that the vents are placed to allow the maximum benefit.

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. Pass the opposite end of the duct through the hole in roof. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Vent your bath and kitchen exhaust fans through the roof through a special roof hood.

The 2nd bathroom vent drips on the floor and is ruining the ceiling. 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. 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.