Installing Roof Vent For Bathroom Fan

If possible run the duct straight out through a wall.

Installing roof vent for bathroom fan.

Slide the vent under the shingles so they cover the top half of the vent flange. Apply a bead of asphalt roof cement on the bottom of the vent. In addition to a vent fan a bathroom unit may have a light night light or heater. Climb into the attic and clear away any insulation from around the hole.

The lower half of the flange sits on top of the shingles. A heater uses more power than a light and fan so it may need to be on its own circuit. Draw a mark on the bathroom ceiling where you d like to install the vent fan. Plan the installation so the vent duct is as short as possible and makes as few turns as possible.

This old house general contractor tom silva shows how to properly install a roof mounted bath fan vent. See below for a shopping list and tools subscribe. Check the damper and the screen in prior to installation. How to install a bathroom fan vent in the soffit.

How to vent a bath fan through the roof 1. Next we must slip a worm drive metal clamp on the inside part of duct liner. 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.

Choosing a whole house fan. Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic. Center the nail between. Slide a flat pry bar underneath the.