Bath Exhaust Fan Through Roof

This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space.

Bath exhaust fan through roof.

See below for a shopping list and tools subscribe. Pass the opposite end of the duct through the hole in roof. The 2nd bathroom vent drips on the floor and is ruining the ceiling. The master bathroom and the 2nd bathroom vent through the roof and through the same opening.

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. Run a thick bead of tri polymer sealant along the underside of vent hood. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out.

This old house general contractor tom silva shows how to properly install a roof mounted bath fan vent. Next use aviation snips to cut slits into the sheet metal sleeve. Going through the roof guarantees it will go up in the air and away from your home i would love to see a copy of the building code that suggests venting a bathroom fan through the soffit is recommended. Bend over the tabs then nail the tabs to the roof.

Take the end of the duct with the connector fitting and attach it to bath vent fan. In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover.