... film, mineral, fine sand, al This kind of waterproof coiled material is made in the following way: base materials are ... basements, bathrooms and pools of industrial and civil architectures, waterproof, damp-proof, airproof, leakage-proof works of bridges, parking ... of lapping partIf lapped along longer lines, for single waterproof layer, thelappinglongitudinal/transverse width should not be less than ...