My brother-in-law is renovating his basement and he wants to add a home theater. He has removed the current floor, which was very cheap laminate (and poorly installed). He has come to me for advice about what he can replace it with and so I come here. I assume carpet is his best option acoustically but what does he lay it on? The concrete floor does seem quite dry. But bad things can happen. His ceiling is only 7' 7" to the bottom of the joists so he wants to minimize the height of anything he adds beneath the carpet. He could go with DRIcore but that eats up 7/8" of headroom. That's not all that bad but the panels don't come cheap: http://www.dricore.com/en/ewhat.htm "Subflor" is another product that seems to be essentially identical: http://www.subflor.com/ ThermalDry is an all plastic option that's only 1/2" high, but I'll bet it's even pricier: http://www.basementsystems.com/produ...or_matting.php Finally, the thinnest and likely the least expensive option I've found are a couple of products from Superseal: All-in-One and Warm-N-Quiet, which are 1/8" and 5/16" high, respectively: http://superseal.ca/all_in_one_subfloor.html http://superseal.ca/subfloor_plus_foam.html Opinions? Preferences? Has anyone used these products (especially those from Superseal)?