adhesive for quarry tiles onto epoxy dpm

16 Aug 2006
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United Kingdom
I've just had a wood floor put in on concrete, and needed to use a two part epoxy resin dpm to seal the floor and stop moisture affecting the wood. Left a section near the door to tile later with machine made 6" quarries, and now need advice on what kind of adhesive to use to stick them to the epoxy. The resin has set smooth and shiny like it's meant to, and I didn't think ahead and blind it with quartz or sand.

Is this just a matter of giving the dpm a harsh sanding then using an off the shelf adhesive for non-porous tiles, eg porcelain?

Any advice gratefully received.
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Is there now, or was there, a moisture problem with the concrete floor?

If not. A very thin coat of bagged, powdered adhesive (a scratch coat), allowed to almost dry, and then trowel on in the usual manner.
No, there wasn't any obvious problem with moisture, and I put the epoxy dpm on because I had no faith that the DIY work done laying the floor in the 70s was any good - there was a plastic sheet visible along most edges, but in other places it was twisted or absent. Carpet's one thing, but solid wood's another...

A scratch coat's a good idea - should I be looking for any specific kind of powdered adhesive?
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