Abstract: A thermal joint having a cold side angle joint; a warm side angle joint; a plurality of bond holes, wherein a liquid curable flooring material bonds through each bond hole; a plurality of rod holes in the warm side thermal wall each holding a rod; a plurality of tube holes in the cold side thermal wall each having a tube; a plurality of leveler holes in each base for containing an adjustable leveler; a tie bar engaging each tube and each rod; a heater conduit longitudinally positioned on the warm side for transferring heat to the warm side, wherein the thermal joint simultaneously allows the rods to slide in the tubes as the cured solid flooring material expands and contracts due to temperature changes and simultaneously prevents vertical deflection as heavy equipment is transported across the cured solid flooring material.