Mastic Sealing Tape is a self-adhering, flexible membrane used to seal seams, cracks, and holes in surface to create an excellent substrate before applying acrylic coatings. Mastic Sealing Tape is a unique formulation of premium grade bituminous resin modified with synthetic resins. It is designed with an easy, peel- off paper backing to expose a highly adhesive bottom side and then placed over a clean, dry, and sound surface. The topside has a polyester mesh fabric built-in for strength and flexibility. Mastic Sealing Tape is inert and inorganic, and will never rot, decay, or be affected by bacteria or fungus. Available in 4 inch to 36 inch width rolls, 67 feet long.

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