What to look out for when installing a gable attic vent?

by cr0   Last Updated January 19, 2018 20:21 PM

My attic needs better ventilation. On one end of the attic it terminates to a room that has a cathedral ceiling, and the other end of the attic terminates at an exterior wall (the main gable). There are overhangs on the sides of the house but no sofit vents yet. The only ventilation in the attic, aside from being a bit drafty after standing for ~100 years, is a ridge vent (which seems well done but is buried by snow seasonally).

With so little ventilation, right off the bat it seems more is needed. To make matters worse, there's a shower vent exhausting directly into the attic, and it needs someplace to go. (Thankfully, the attic's woods all look good with only one small and non-structural piece I've seen that aught to be replaced.)

On account of the above, a gable vent seems like a good option to vent the attic and also give me a place to vent the shower exhaust.

What should I look for when getting a gable vent installed or doing it myself? I've done some carpentry but am not confident about cutting holes in my house's shell, and even if hiring it out I want to learn what to look for in a good job. Any tips would be appreciated about what to look for in the gable vent itself, making cuts and installing the gable vent, or routing the shower exhaust out through the gable vent somehow.



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