How to install wall cap through stucco?

Old 07-10-05, 06:32 PM
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How to install wall cap through stucco?


I'm in the process of replacing my upstairs bathroom ceiling fan.
Like many others I've read about, I disovered my current fan vents into the attic. Someone years ago tried to vent it to the clay ventillation pipe (3" - old Spanish-style house). So it seems the best way to remedy this is to install a 4" wall cap and properly ventillate the fan.

But I can't find a good description of haw to install the cap through a stucco wall. One site said to drill concentric holes through the stucco with a masonry bit and then chisel it away. Is this the best way? Then jigsaw the rest out? Also, what about attaching it to the wall? Can I use some kind of adhesive then caulk?

Any info would be appreciated. Great site by the way!
Old 07-11-05, 04:54 PM
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The best way I've found is to drill numerous holes around the circumfrence of where you want to remove & chip it out with a hammer & small chisel. What is behind the stucco?
Old 07-11-05, 04:56 PM
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What Grady said.

You can use polyurethane caulk as an adhesive. Hold the cap in place with duct tape until the caulk sets.

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