Forum Title: Moisture Control Around Windows
Hello, I have metal framed windows in my bathroom that transfer too much moisture onto the drywall and sill. So I'm getting ready to replace the sill and repair the drywall and I'm trying to figure out the best 'preventive' approach so I don't wind up in the same situation again. I'm thinking about carving a narrow V groove into the the drywall abutting the metal frame and running a small bead of silicone or latex caulk and laying a strip of waxed cord on top of that. It seems like this will give me a decent moisture barrier between the frame and the wall and sill. I'd appreciate hearing anyone's thoughts about how effective this will be and/or other ideas ... Thanks!
Category: Windows & Doors Post By: KIRK RODGERS (Redondo Beach, CA), 01/24/2019

Your exterior stucco finish (bottom right pic) looks to be in very nice condition. Tearing out the old steel frame would almost certainly crack and destroy that otherwise good finish. So while in most cases I would not think twice about tearing out the steel frame, for the sake of the original finish, I might consider leaving them in place. Those windows don't even come close to meeting egress requirements (5.7 sq ft clear opening) so that's a non-issue. I would probably measure from the outside, and try to determine what size window I could fit inside the existing opening so that I could just run a bead of sealant around it once the masonry opening has been padded out and the window has been secured. I'd suggest you base your window order on that premise.

- BARBARA ROWN (Kennewick, WA), 03/07/2019

The drywall that butts up to the window could either be put in a vinyl drywall j-channel or use a tear-away L-bead around the window prior to installing the drywall. Either will prevent the drywall from wicking up water from the window condensation. You can caulk the joint too if you like.

- JESSICA LEWIS (Jacksonville, FL), 02/19/2019

... i didn't know about j-channel and L-bead ... very useful ... but in my particular situation i'm trying to find a fix that will avoid having to tear out the existing strip of drywall framing the window ... do you think I could install the L-bead into the inner corner where the drywall meets the metal widow frame? I realize i wouldn't have a flat surface along the drywall panel but that esthetic doesn't mean much to me ... ... and regarding the moisture ... it seems like the bead will function like roof flashing ... channeling the water away from the drywall, but won't it drip down the bead onto the sill : / Thanks for helping me understand this ...

- KATHERINE ROGERS (Ann Arbor, MI), 02/20/2019

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