In recent years, hydronic radiant floor heating has become increasingly common throughout the U.S. It's widely viewed as one of the most comfortable forms of heating in kitchens and baths, especially where tile floors are involved. As the technology has grown more popular, radiant heating is being used more and more in other rooms of the house as well. Radiant floor heating does have its limitations, however. Let's say a heated floor gets covered with a heavy carpet and pad: It's like throwing a blanket over a radiator; the floor can't release heat into the room fast enough. Full-thickness solid wood flooring can also act as an insulator. The same is true where much