I am installing underfloor radiant heating (using water) between the joists under my bathroom. The whole floor will be a shower pan. I need to know if I put the thermostat wire between the pan and the tiles, or between the subfloor and the pan, or at the floor level in the wall, which will also be tiled) or?
Your best spot would be to place your thermostat underneath your floor with your radiant hoses.It would also be wise to place batt insulation or even radiant foil to relect the radiant heat to the floor that you want to warm.