Venting Bathroom Fan Through Existing Roof Vent

This involves running ductwork from the fan usually though an attic and out through the roof.

Venting bathroom fan through existing roof vent.

Second during cold winters you ll be blowing warm moist air onto a cold surface the roof vent and roof plywood. If you re tempted to vent your exhaust fan through an existing roof vent or even vent it into the attic don t do it. Take the end of the duct with the connector fitting and attach it to bath vent fan. Pass the opposite end of the duct through the hole in roof.

Although most bathroom vent fans are quite simple some have bells and whistles such as motion sensors that switch the. If you have two bathrooms that are close together and one has an exhaust fan and the other doesn t you might be wondering if you can tie a new exhaust duct into the existing one. Each bathroom has its own exhaust fan. Each fan vents separately out the roof.

More often bathroom fans vent out through a duct running up to the roof. Bend over the tabs then nail the tabs to the roof. Next use aviation snips to cut slits into the sheet metal sleeve. It eliminates the need for routing ductwork through the house and these fans usually dry the bathroom more quickly.

Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. How to install a bathroom vent fan. The 2nd bathroom vent drips on the floor and is ruining the ceiling. 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. Bath vent fan installation building codes bath vent fan troubleshooting bath vent fan repair. This article series explains why bathroom vent fans are needed and describes good bath vent fan choices necessary fan capacity and good bath vent fan and vent duct installation details.