When venting a bathroom exhaust fan make sure to vent the air to the outside rather than into your attic where it can cause mold and mildew to form.
Venting bathroom fan through metal roof.
Using the tape measure determine the size of the cut into the roof that will be necessary to insert the vent into the space.
Vent bathroom fan through metal roof image of and closet.
The rvk1a broan model roof vent ducting kit is for roof ducting installation of exhaust fans with a 3 in or 4 in duct.
Start in the attic and drill a hole through the roof in the desired vent location.
The black steel roof cap features a built in back draft damper and bird screen.
From up on the roof use a jigsaw or reciprocating saw to cut a 4 in.
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Measure the body of the vent.
For optimum venting use insulated 4 or larger metal ductwork rather than flexduct that may sag giving you areas that collect water and risk leaking into a ceiling below.
Solid metal vs flex duct for kitchen and bath vent fans.
Try to keep it close to the fan location.
From inside the attic drive a nail through the roof directly above the bathroom vent fan.
From the roof find the nail and use the utility knife to cut roof shingles from around the nail.
A bathroom vent is necessary and it makes your bathroom fresh and hygienic.
Most of the bathrooms have bathroom fans installed and they are vented through the wall because it is the easiest option.
Center the nail between two rafters.
Options for venting a bathroom exhaust fan include best to worst.
Through the roof or an exterior gable wall.
Record those measurements on a notepad.
But if your bathroom is placed in the middle of your house or you don t have the scope to vent through the wall then you can vent the bathroom fan through the roof of the house.
Included is 8 ft of 4 in diameter flexible foil ducting that conforms to ul 181 class 1 air connector requirements.
Kitchen vent fans require metal ductwork for fire safety.