Ceramic tiles on painted drywall

Posted by EpsilonRho on April 2, 2006, 8:53 pm

I am planning to install ceramic tiles in the bathroom glued to the drywall.
The drywall is painted with a couple of coats of "bathroom" latex paint (w/
fungicide) and it is in good shape. Any problem with the bonding of the
tiles to the latex paint?
TIA,
Gene

Posted by Newfie on April 3, 2006, 8:27 am

This is one of those questions where there really is no exact answer.
The adhesive will stick to the paint. But there is no way to determine
the long-term results of a new tile finish over a painted surface. The
paint can peel, break down or otherwise come loose from the substrate
and the tiles may will also come loose.

A few things I take into consideration when tiling any area are:
1. Weight of tiles on the drywall - I personally will not go moe than 3
feet high on drywall with any tile. If more than 3 feet, replace
drywall with cement board.

2. Wet areas - if tile is being installed in an area where water is
frequent - I use backerboard with a waterproof membrane (Kerdi system
is great).

Posted by dadiOH on April 3, 2006, 8:42 am

EpsilonRho wrote:

> I am planning to install ceramic tiles in the bathroom glued to the
> drywall. The drywall is painted with a couple of coats of "bathroom"
> latex paint (w/ fungicide) and it is in good shape. Any problem with
> the bonding of the tiles to the latex paint?
> TIA,
> Gene

They will bond fine either with thinset or mastic if the paint is
non-glossy. The bond will be as strong as is the attachment of the
paint to the drywall.

--

dadiOH
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