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Shower water leaking behind wall and down floor hole — what’s the best way to seal this permanently?
We’ve been chasing down a leak for a while now and finally found the culprit — but I could use some advice on how to properly seal everything up to stop it from coming back. It started when we heard water leaking on the first floor, directly below the second-floor washroom. We checked everything and even called a plumber. He tested all the caulking around the tub, sprayed the shower area section by section, and checked behind and under the tub — no visible leak. I ran my own tests: Plugged the tub and filled it — no leak Ran the faucet — no leak Ran the shower — no leak Drained the water — still no leak Eventually, we suspected that water from the shower was splashing or running over the edge of the tub and dripping into the drywall beside it. We were right — I removed the drywall next to the tub, and it was soaked. The metal joint was rusted out. Once I took off the baseboard, I also found a hole at the bottom of the wall that goes straight down — likely how the water was making it to the lower floor. Here’s where I need help: There’s a visible hole at the base of the wall/floor — what’s the best way to plug this up so water can’t go through again? There’s a gap between the tub and the framing (see photos) — should I caulk that or use something else to ensure it’s waterproof? I cut the drywall to expose this area. Of course, I’ll be replacing it — but before I do, is there something I should apply inside (behind the wall) to fully waterproof it? Do I need waterproofing membrane, backer board, or anything beyond regular drywall in this section? I’ve attached photos showing the exposed wall, the hole at the bottom, and the gap in question. I want to make sure I do this right and stop the water from ever leaking through again. Any guidance or tips would be really appreciated! https://preview.redd.it/g5abalwswate1.jpg?width=1536&format=pjpg&auto=webp&s=1ad705945334f15a300cd4717dc0767d18433780 https://preview.redd.it/43lpmlwswate1.jpg?width=1536&format=pjpg&auto=webp&s=eb62a3a48e93cdadcf0e497bc4451c50e3372ffa https://preview.redd.it/kjszklwswate1.jpg?width=2048&format=pjpg&auto=webp&s=c49bff5a7cfc9aeccd6ecc93faf372aa614fbad0 https://preview.redd.it/09yyfexswate1.jpg?width=1536&format=pjpg&auto=webp&s=00887e90c2516c44e9ed585c0829250378858bc3 https://preview.redd.it/g75pxlwswate1.jpg?width=1536&format=pjpg&auto=webp&s=b2acb13ec4ad27e1390b98cc2c7937e55befb08c submitted by /u/Rethirded [link] [comments]
| | We’ve been chasing down a leak for a while now and finally found the culprit — but I could use some advice on how to properly seal everything up to stop it from coming back. It started when we heard water leaking on the first floor, directly below the second-floor washroom. We checked everything and even called a plumber. He tested all the caulking around the tub, sprayed the shower area section by section, and checked behind and under the tub — no visible leak. I ran my own tests:
Eventually, we suspected that water from the shower was splashing or running over the edge of the tub and dripping into the drywall beside it. We were right — I removed the drywall next to the tub, and it was soaked. The metal joint was rusted out. Once I took off the baseboard, I also found a hole at the bottom of the wall that goes straight down — likely how the water was making it to the lower floor. Here’s where I need help:
I’ve attached photos showing the exposed wall, the hole at the bottom, and the gap in question. I want to make sure I do this right and stop the water from ever leaking through again. Any guidance or tips would be really appreciated! [link] [comments] |
