I’m thinking of placing a wood floor on a concrete pad with radiant heating. I plan to just lay the prefinished flooring directly on top of the concrete without fastening. What do you think.
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I would investigate a floating floor and then follow the manufacturers instructions.
Likewise, what you describe is a "floating" floor. One way to install Prego and the like, bu could be done with T&G flooring. It nicely solves the warm/cold dry/wet seasonal issues of a wood floor.
For best performance as a heating system, consider the Prego-like stuff versus solid wood. It is much thinner and has less R-value per inch. In all, much less insulative. So your heating responds more quickly and accurately. They have more conductive underlaying pad (for a bit of give) for RFH.
Generally speaking, floating floors and regular wood hit just about the same R-value once you add the pad back in. It's not a large enough difference to be a very big deal in either case.What can be a big deal though, is floating floors do not gap in between pieces like the nail down floors, which makes them very attractive if you do not have the time or the confidence in a regular wood install. And over concrete, of course, options are limited anyway.-=Northeast Radiant Technology=-
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