New answers tagged stucco
Yes as an exterior (no as an interior). The general rule is that the hardest surface must face the side that water would be attacking from. If you reverse it, any water that penetrates cause a pressure build up when it meets the harder surface and cause the softer material to crack.
What's the proper way to seal a exterior surface mounted lamp from water entry? Here's what I ended up doing. I applied a bead of paintable silicone caulk directly to the stucco, tooled it for good adhesion, and smoothed it with a soapy finger. This in essence built up a nearly invisible gasket. The fixture already had a weep hole. Fastening the fixture ...
What's the proper way to seal a exterior wall mounted luminary from water entry? Caulk it with a high-quality, paintable silicone caulk like this. I have been using this caulk for 8 - 10 years and have never had to re-caulk after applying it.
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