• Sista polyurethane foam is a moisture-hardening, polyurethane-based product. It is a multi-purpose universal material that can be used in fixing door and window frames to the wall and filling the gaps there, covering and insulating hot and cold water pipes, placing bath tubs on the floor and all kinds of joint and dilation joints imaginable. Sista polyurethane foam can be used for bonding, filling and insulation purposes. It provides adhesion in all building elements except polyethylene, polypropylene, silicone and teflon.