Warmboard has introduced Warmboard-R, a 13/16-inch-thick structural radiant heating panel. The slim profile is designed for remodels and renovations where the full structural strength of the 1 1/8-inch size is not required. The 2- by 4-foot panels have 12-inch tubing spacing. Tubes are 1/2-inch-thick and the conduction method is 0.025-inch-thick 1060 aluminum. Straight and turn panel types are available.