Every house needs a foundation to lift its components off the cold ground, removing the structure from moisture, bugs and other negative influences. A hot tub should be built the same way. Their weather-resistant, insulated Durafloor™ is silicone-sealed and screw bonded together with the hot tub cabinet for a solid foundation. Made from 100% recycled ABS, the Durafloor™ system insulates, protects and helps to prevent heat loss that can be drawn into the cold ground (referred to as the ‘heat sink’ effect). Their RTB insulation contains natural salt borates which are undesirable to insects and rodents.