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Lay subfloor over moist concrete under Pergo???

Lay subfloor over moist concrete under Pergo???

Lay subfloor over moist concrete under Pergo???

Lay subfloor over moist concrete under Pergo???

Thanks to all who offered their advice on my floor problem. I thought I would provide an update. The Pergo floor is laid and looks great. I did order the Delta-FL subfloor and laid it under the Pergo.

It all went together pretty well, except the dimples on the Delta FL does not interlock as well as the company suggests it should. Also, the Delta-FL was somewhat noisy. It sounded like someone was walking in soccer cleats on a concrete floor. So, I contacted the manufacturer and they suggested that I lay some polypropylene landcaping fabric under the Delta. It's a little strange, but it works.

Okay, one thing to remember when using the Delta-FL is that it raises the level of the floor. This makes installing the transition moldings a bit tricky. I got around it by simply installing thicker slate tiles next to the Pergo floor (as opposed to our original plan of using ceramic tiles).

When all is said and done, the floor looks great. I probably would recommend any other brand instead of Pergo, if anyone were to ask me, for two reasons: One, I thought their non-responsiveness to the problem in the first place was, well, non-responsive. I bought $1,000-worth of their product and their best solution was to suggest that I NOT lay their product. Two, I have since seen some other brands being laid and feel that they go together easier and tighter than the Pergo Presto.

So, mahalo (thanks) again for everyone's suggestions.

Aloha.