I've noticed a pretty big gap between my bathroom counter and the backsplash because the counter seems to be sagging. This gap is almost the whole length of the counter on the wall. Can I fix this myself? I don't have much home improvement experience. Just for reference, I've marked the size of the gap in the pictures I posted.
3 Answers
Have you figured out what caused the sagging yet? This is important to prevent it from happening again!
First, I’d recommend cleaning up any debris in that gap. Vacuum it out and then use a sharp knife to cut any old caulk. After that, add a thin layer of clear silicone caulk and shim under the cabinets with some wooden shims. Just give them a dab of glue to hold them in place. Here’s a shim diagram for reference: [Shim Diagram](https://blog.extremehowto.com/wp-content/uploads/2015/07/shim-diagram.jpg). Finally, trim the shims with a multi-tool.
It's definitely odd for a countertop to sag like that—it usually sits securely on the cabinets below. You might want to check if the cabinets are properly secured to the wall and whether the countertop is glued to them or just resting on top. If something has gone wrong with the base, it could be easy to shim it back up to level. But first, make sure to pinpoint what caused the sagging in the first place.