Behind the kitchen sink I noticed this deteriorating situation happening so I took it apart until I found no more mold and then washed with bleach (1 tbsp to 1 gallon) and let it dry good. It's all the way down to the dry wall. There does not appear to be a leak or any sort, but the splashing from washing dishes seems to have caused. Any recommendations on how to go about fixing and avoiding in the future? beginning

removed tile

removed particle board, molded down to drywall!

1 Answer 1


It's hard to tell from the picture but it looks like it was tile mounted to a wood board. Wood is one of the worst materials for behind the sink. If going to replace with tile, use a concrete backer board instead and consider using tile trim caps to cover the top. Otherwise use a solid stone or stone like material.

And make sure the caulking is in good shape. Every couple of years it needs to be stripped out and replace. If it is starting to look old and cracked, it's been there too long. No mater what the material, water under or behind the splash with always cause problem.s

  • A silicone caulk will last longer than a paintable latex caulk, too.
    – iLikeDirt
    Oct 5, 2014 at 13:31

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