[RaceDeck]

I am surprised that "too tall" Bob Evans has not jumped in on this yet

Radiant Heat: Your right, you can use the FreeFlow tile in areas where you want to let the heat transfer at a much higher rate..It will have no effect on the flooring itself. In my garage, I use both the Diamond tile and the FreeFlow and they look great together and work great together. In snowy enviroments, the FreeFlow allows the snow, dirt, water, etc to flow through the floor where it then flows out the garage. I never have to worry about a huge mess in the garage from all the melted snow off the cars...no dirt tracking in the house.

Double Venom- The product you used on your boat may have been our DURAGRID line. http://www.duragrid.com It is designed for marine use, shower flooring, safetry matting, etc. It is made from Vinyl and is loaded with anti-microbials to fight off odor causing mold and mildew. Not designed for garages or work shops.