LPA 2500 is a two-component, closed-cell, polyurethane foam system specifically designed to provide a high performance, light weight roofing system for use over insulation water proofing a wide variety of roof deck construction and configurations. LPA 2500 locks in every portion of the roof creating a seamless membrane thus eliminating the need for mechanical fasteners - the number one cause of conventional roof leaks. LPA 2500 spray foam roofing can also be applied to vertical surfaces making the seamless coverage self-flashing. In addition to roofing applications, LPA 250is also recommended for tank insulation applications.