How Do You Vent A Bathroom Fan Through The 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.

How do you vent a bathroom fan through the roof.

First you ll partially block your roof vent with the piping reducing the flow of cooling air through your attic. How do i properly vent a bathroom fan into an attic. Either way the vent will have to go directly to the outside and installed with a vent hood cover. Second during cold winters you ll be blowing warm moist air onto a cold surface the roof vent and roof plywood.

Adding a vent to the roof wiil require a vent kit associated for the type of tiles you have diffence in prices if your not experienced you will need a roofer possibly scaffolding a crawler ladder all which depend on height of the roof. The 2nd bathroom vent drips on the floor and is ruining the ceiling. A roof vented fan takes it s toll on the shingles. 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. Use rigid metal ducting aluminum or galvanized steel with lengthwise seams facing up and joints sealed with foil tape or duct mastic or rigid plastic pipe. The fan will need to be an inline fan with ducting and a grill in the bathroom. Run a thick bead of tri polymer sealant along the underside of vent hood.

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. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. 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. Pass the opposite end of the duct through the hole in roof.

Take the end of the duct with the connector fitting and attach it to bath vent fan. I disagree with this opinion. I can see an upside down v shaped line from the roof vent on the shingles those shingles are more worn. Bend over the tabs then nail the tabs to the roof.

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. If you vent it through the roof get the vent that blows away from the shingles as much as possible.