PrevENt MP-250-Cap Fully Adhered Cap Sheet is constructed with a tough non-woven reinforced polyester mat strengthened with select glass fiber strands. During the manufacturing process, expandable graphite is added above the reinforcement to impart excellent exterior fire resistance properties. Class A-rated PrevENt MP-250-Cap is coated top and bottom with select SBS polymers and premium quality asphalt. Ceramic coated mineral granules are embedded in the surface of the product to provide protection against ultraviolet radiation, while the underside is sanded to allow installation via mopping asphalt or an IKO-approved cold process adhesive. PrevENt MP-250-Cap can be used as a protective cap for a conventional BUR system or as the top ply in a two-ply ModiflexTM system.