Is there a "paintable" type barrier that can be painted on the drywall before
you install the tile? What about paint. We have a high moisture area in the
bathroom that doesn't have tile but the shower regularly splashes dropletts of
water on the paint. What can be used as a good barrier before we repaint? Or
is a good quality paint "good enough"?
Water droplets on a vertical ceramic tiled wall are not going to
penterate. You're worried for nothing. However if you insist any PVA
sealer will work prior to tiling, or any other finish for that matter.
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