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Kitchens and Baths, Ask Danny Published 05/14/2008 by Danny Lipford
I am planning to install a ceramic backsplash above my laminate counter top in the kitchen over the painted drywall. What kind of treatment is needed for the drywall so that it does not get moist? Also, a quick step-by-step procedure would help a lot, too. -Raj
Hi Raj,
You should be able to tile right over your existing drywall with no problem. Once the adhesive dries and the grout has set, it will be imperious to moisture.
For detailed instructions on how to install a ceramic tile backsplash, check out the following article, Ceramic Tile Backsplash Project, and video, Ceramic Tile Backsplash, on our website.
Good luck with your project,
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May 21st, 2008 at 8:03 pm
For a sink area, you really should be using a “rock board”. Green drywall is not waterproof - it will delaminate just like regular drywall if it gets wet. Green drywall is just more humidity resistant so it is used in bathrooms. I would cut out an area of drywall slightly smaller then your tile area, cut out a piece of tile backer board to fit the cutout area, and shim up the backer board so the tile will sit flush with the surrounding wall. Fasten the backer. The tile will overlap onto the drywall slightly and at the same time seal up the outside perimeter well to prevent water intrusion. No taping will be needed since your tile glue & tile will seal the seam.