Drywall – How to close up a gap in the corner of the shower

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We hired a contractor some time ago to remodel our bathroom. We started noticing things that didn't stand up to use soon after the project was completed. Most of them were minor, so no headaches there. However, one thing keeps happening that driving me crazy.

There's a large gap in the corner of the shower that was filled in with joint compound (I think). The caulk that was applied over it started to bubble up and become discolored. After we re-caulked a few times, it kept happening.

It's driving us up the wall, and I can't figure out if there is a DIY solution that doesn't involve taking tiles off.

If anyone has any interesting suggestions or ideas, I'm basically open to anything.

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Best Answer

IF this is your only issue with this shower then you will have to borrow from the cheap hotel maintenance mandate of fixing shower corners.

That would be placing a strip of plastic (pvc) or glass along that whole corner.

This is how it works.

  • you get a 3" by "1/4" piece of glass or pvc that runs up the entire corner (high enough where water shouldn't be entering the top)
  • epoxy/glue that to the back wall
  • caulk each side and the top

The only weak point after doing this will be the very very bottom. You just have to recaulk that frequently - every 6 months or so.

In my teen years I did this for a hotel chain using very flimsy shower pvc. It would generally give the showers another 1-2 years which in the hotel world is like gold.

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