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APP stands for Atactic Polypropylene Membrane. APP waterproof membrane is a waterproofing material made of bitumen. It may have both sides PE film coated or one side coated with PE film & other side with silica sand or aluminium foil.
Posted by Tradeindia user (19-09-2020)
APP waterproofing membrane is used on concrete roofs, retaining walls, basements, gutters, balconies, inclined roofs, man-made ponds, water tanks, bathrooms, & any wet surfaces.