Nuheat, which makes electric floor-heating systems, now can custom-cut its mats to fit any floor while heating through stone, tile, granite, marble, slate, engineered wood, and laminates. The 1/8-inch-thick mats can be controlled with one of three thermostat systems as an alternative to radiators or baseboard heat. They can be installed under shower beds and in saunas. Nuheat,; 800.778.9276.