The location of the bathroom will determine how extensive the ductwork will be.
Vent bathroom through wall.
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If your exterior siding is vinyl or fiber cement you will have an easier time cutting the hole.
You can pass the vent through a wall instead of through the roof but it must still rise over the roof.
1 cut into the drain pipe you want to vent with a hacksaw.
Use a layout square or framing square to draw the.
Ductwork is what will connect the fan to the outside.
There are really only three venting options.
If you want to vent a bathroom fan through an exterior wall you will have to cut a 3 inch or 4 inch hole with a hole saw drill bit.
Because a standard sink drain exits through the wall behind the sink it sits higher than the tub shower and commode drains making it an optimal spot for a vent.
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Make the cut within 5 feet of the.
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Use the reference hole as a landmark to transfer your measurements from the attic to the ceiling.
Since a bathroom vent fan should run for 10 15 minutes after you finish your shower to remove all the moisture consider a fan that cuts on and off automatically using a moisture sensor or replace the wall switch with a timer.
Mark the ceiling back in the bathroom measure the inside dimensions of the vent fan s intake port to determine what size hole you need.
Let the bathroom vent fan run throughout your bath or shower and just as importantly leave it on for at least 15 minutes after you re finished to fully air out the space.
You may be able to configure a short route.