Venting Bathroom Fan Through Metal Roof

Vent bathroom fan through metal roof image of and closet.

Venting bathroom fan through metal roof.

From inside the attic drive a nail through the roof directly above the bathroom vent fan. Measure the body of the vent. Start in the attic and drill a hole through the roof in the desired vent location. Leave the drill bit sticking through the roof so you can find the hole.

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. Options for venting a bathroom exhaust fan include best to worst. How bathroom fans should be vented a plete hvac buzz how to prevent ceiling stains around your bathroom exhaust fan star tribune bathroom vent homedecorations solar powered ridge ventilation fan for metal roofs blaster where do bathroom fans vent to in apartments hvac buzz. Through the roof or an exterior gable wall.

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. From the roof find the nail and use the utility knife to cut roof shingles from around the nail. Try to keep it close to the fan location. Center the nail between two rafters.

Remember to allow for the lip on the vent mechanism that will fit over the opening and rest on the surface of the roof. The black steel roof cap features a built in back draft damper and bird screen. The rvk1a broan model roof vent ducting kit is for roof ducting installation of exhaust fans with a 3 in or 4 in duct. A bathroom vent is necessary and it makes your bathroom fresh and hygienic.

In this video this old house general contractor tom silva shows how to properly install a roof mounted bath fan vent. From up on the roof use a jigsaw or reciprocating saw to cut a 4 in. Included is 8 ft of 4 in diameter flexible foil ducting that conforms to ul 181 class 1 air connector requirements. Solid metal vs flex duct for kitchen and bath vent fans.

Using the tape measure determine the size of the cut into the roof that will be necessary to insert the vent into the space. Record those measurements on a notepad.