Sure-Weld SAT (Self-Adhering Technology) membrane is a heat-weldable single-ply thermoplastic polyolefin (TPO) sheet designed for fully adhered new roof construction and re-roofing applications. It is reinforced TPO membrane laminated to an elastomeric pressure-sensitive adhesive which is based on advanced polymerization technology that combines the durability and weather ability of ethylene-propylene (EP) rubber with the heat weldability of polypropylene. The membrane is specifically formulated for long-term weather resistance without the use of either polymeric or liquid plasticizers. Every roll of SAT TPO membrane utilizes Carlisle's exclusive Lay-Flat Technology, a perfect combination of membrane, adhesive and manufacturing expertise that results in the easiest TPO installation. The adhesive is factory-applied to provide uniform thickness, yielding consistent field performance. The pressure-sensitive adhesive is a 100%-solid, hot-melt adhesive that eliminates VOC and odor concerns typically associated with fully adhered systems. An uncoated edge is maintained to allow for heat-welded field seams. The release liner is silicon-coated on both sides to provide consistent, easy release from the adhesive even if either side accidentally touches the adhesive again after removal. This membrane is environmentally friendly and safe to install with its VOC-free pressure sensitive adhesive and heat-welded seams.