In the attic mark a spot directly above the duct so you can cut a hole in the roof decking and extend the vent pipe up through that opening.
How to install microwave vent through roof.
Dry fit the vent cap.
Any help would be greatly appreciated.
We would love to install a vent hood but don t know how to vent it.
Mark the location where you will install the vent.
Mount a tube of outdoor quality.
We have a gas range built into a center island with a downdraft vent that doesn t vent well.
A vent should be installed between them when possible.
Vent cap installation measure the distance from the lip of the outer wall opening to the microwave mounting plate.
Use a hammer or a drill with a small bit to locate any wall studs or ceiling joists.
Choosing a whole house fan.
Apply a bead of asphalt roof cement on the bottom of the vent.
Nail the lower corners with roofing nails and tar the heads.
Wear heavy gloves and use the tin snips to carefully trim the duct section to the required length.
Slide the vent under the shingles so they cover the top half of the vent flange.
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Right above where our range is is a upstairs bedroom which prohibits going through the roof.