Quote:
Originally Posted by Jay-Cee
...with traffic, heat expansion, contraction, humidity, that floor will bounce and move. There is absolutely no question in my mind about that. The bouncing and shifting of the above flooring from these, even though slight, will probably wear away at the foam board over the course of a few years and turn it into "pink dust"...
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Jay Cee,
I definitely see what you're getting at.
Well, the high-density pink foam is fairly dense stuff. I know that it is being used under some of the WarmBoard type of installations.
The way I was envisioning it would be to spread construction adhesive with a pretty fine notched trowel between the layers of foam/mdf(OR OSB)/Winderboard. I figure that would immobilize the structure enough so that it wouldn't start that "working" that you described.
-AC_Hacker