Modiflex MP-180-SS-Base (3.0 mm) Fully Adhered Base Sheet is constructed using a tough non-woven reinforced polyester mat strengthened with select glass fiber strands. Coated top and bottom with select SBS polymers and premium quality asphalt, both sides of the product are sand covered to allow installation via mopping asphalt or an IKO-approved cold process adhesive. Modiflex MP-180-SS-Base (3.0 mm) is an excellent choice as the “lay flat” base sheet in a layered membrane construction system.