Engineered hardwood floors are the ideal wood floors to be used when installing over radiant heat, while the change in temperature can elevate moisture causing solid hardwood to swell or warp, engineered flooring and its multi-ply construction can provide more stability thereby better resisting movement from environmental fluctuations. Engineered hardwood can also be “floated” (recommended) which means the boards are glued at the seams and not nailed/glued down to the subfloor, this will prove useful by leaving plenty of room for the thin tubes to lie easily beneath the floor.