Venting Bathroom Fan Through Metal Roof

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.

Venting bathroom fan through metal roof.

Included is 8 ft of 4 in diameter flexible foil ducting that conforms to ul 181 class 1 air connector requirements. Most of the bathrooms have bathroom fans installed and they are vented through the wall because it is the easiest option. The black steel roof cap features a built in back draft damper and bird screen. 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.

Remember to allow for the lip on the vent mechanism that will fit over the opening and rest on the surface of the roof. In this video this old house general contractor tom silva shows how to properly install a roof mounted bath fan vent. A bathroom vent is necessary and it makes your bathroom fresh and hygienic. 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.

Center the nail between two rafters. Vent bathroom fan through metal roof image of and closet. Record those measurements on a notepad. From up on the roof use a jigsaw or reciprocating saw to cut a 4 in.

Start in the attic and drill a hole through the roof in the desired vent location. Kitchen vent fans require metal ductwork for fire safety. Leave the drill bit sticking through the roof so you can find the hole. Using the tape measure determine the size of the cut into the roof that will be necessary to insert the vent into the space.

Try to keep it close to the fan location. 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. From the roof find the nail and use the utility knife to cut roof shingles from around the nail. Solid metal vs flex duct for kitchen and bath vent fans.

Options for venting a bathroom exhaust fan include best to worst. From inside the attic drive a nail through the roof directly above the bathroom vent fan.