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We just installed a new sink vanity and there's a roughly 1 inch gap between the bottom of our mirror and the top of the sink where the wall is exposed. We'd like to protect the wall back there from moisture. What's the best way to do this? PVC trim? a backsplash of some sort? Not entirely worried about design aesthetics-- just want it to be waterproof.

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  • Really need a picture.
    – DMoore
    Feb 16, 2021 at 17:53
  • Voting to close as either opinion- or design-oriented.
    – isherwood
    Feb 11, 2022 at 19:25

2 Answers 2

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Yep, PVC trim, Accent-strip Tile, Slices of a 12x12 (whatever size you desire) Tile or a sliver of Granite would probably be the best and not be problematic with future cleanings removing a finish or paint.

Or, you may want to reverse your thinking and frame around the entire mirror with a decorative PVC molding. This assumes the mirror is gapped all of the way around for the best look.

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Although Iggy's advice would work, vanity tops often come with a matching backsplash (3-4" high). If this was a display model at the store, they might have left this in their back room or in the display vanity to prevent damage, and they just forgotten to give you it (or possibly the salesperson wasn't aware).

Otherwise, PVC trim is definitely the simplest option, but if you want something more decorative, you might ask around about discontinued tile samples, or consider using a marble threshold.

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  • Yup! We just took delivery of a new vanity (for the yet to be built bathroom). We opened the box to at least inspect the counter top, and right there was the backsplash, separately wrapped but sitting right on top, waiting to be installed against the wall.
    – FreeMan
    Feb 11, 2022 at 18:41

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