Quote:
Originally Posted by rkzenrage
I've installed fan vents, soooo easy. Just drill a hole for your SawzAll, cut the hole and drop it in, caulk and go.
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I know you have done this and I haven't, but I would never trust caulk alone to keep a hole in my roof water tight. Flashing is needed.
Edit: Flashing around a fan, depending on the shape of the fan, will be much like
flashing around a skylight.