Is their one company that makes a better product than others ?

However, I have no personal experience with waterproof laminates.

As well, the recommended installation is over its proprietary Whisper 3Nl underlayment. But no separate moisture barrier is required whether installed on or below grade.

From my net searches, I don't believe that either product of these Belgium-based companies, Dumafloor or Aquastep, are yet available in North America.

I am interested in this product for a thermal break and moisture resistance. I do not have a flooding or water issue in the basement.

I was also interested in keeping max. ceiling height.

I have a friend who laid down a normal laminate on a concrete slad using a vapor barrier and the floor is starting to buckle and warp.

I think the AQUASTEP looks very promising, Like the poster above its not avail. in the U.S yet.

Unfortunately, some manufacturers recommend that method, though hedging their instructions to cover liability, requiring, for instance, humidity level tests and warnings not to use on any floor that has a sump pump or floor drain.