I am have a debate with a client and partner as to whether we need to install a hardy board over the existing drywall ( including with screws and adhesive ) before installing travertine for a kitchen back splash. the tile is a porous finish 3/8"thick travertine tile on 12'x12" sheets, the space to cover is about 18' x 30', the dry wall is pre-painted and about 15 to 20 years old
Drywall – is it recomended to install 3/8″ travertine stone tile directly onto drywall for a kitchen back splash
backsplashdrywallstonetravertine
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Best Answer
The kitchen splash hardly ever gets wet enough to do anything to the drywall behind it. Travertine, since it is very porous, should be sealed to keep cooking grease, food splatters etc, from staining or discoloring the tile. The sealer will help prevent water passing through as well.