I have had problems with mold in my kitchen behind the sink cabinet a couple of times. I have gutted the sink cabinet, the drywall behind it and the lazy susan area, leaving the countertop in place. The countertop is new and I don't want to break it. I want to replace the drywall with a mold retardant surface. That is why I want to know what greenboard is before I rebuild the cabinet under the sink.
Drywall – Will greenboard retard mold growth
drywallkitchensmold
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Best Answer
Greenboard is sheetrock where the paper is water resistant (but not necessarily water proof). A better alternative to greenboard is to use a paperless sheetrock product like Densarmor, which uses a fiberglass backing rather than paper (it's the paper that mold likes).
Note that these products aren't designed for wet applications, however. At best, they are designed for areas that 'are sometimes damp'. If you have mold issues under your sink, the problem is water. You have a leak somewhere. That has to be fixed. Replacing the sheetrock--even with one of these other products is just a bandaid and the problem will return if the leak isn't fixed.