Lapolla FOAM-LOK 3000 Roofing Spray Foam is a closed cell, polyurethane foam system specifically designed to provide a high performance, fully adhered, light weight roofing system providing insulation and waterproofing over a variety of roof deck substrates and configurations. FOAM-LOK LPA 3000 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. FOAM-LOK LPA 3000 spray foam roofing can also be applied to vertical surfaces making the seamless coverage self-flashing. In addition to roofing applications, FOAM-LOK LPA 3000 is also recommended for tank insulation applications.