bitumen mastic

... create a waterproof seal around pipes, vents, and other penetrations through walls and roofs. Metal Bonding: It is used to bond metal sheets and panels together in roofing and cladding applications. Masonry: Bitumen mastic is used to bond masonry materials, such as bricks and blocks, together in construction applications. Sealing: Bitumen mastic is used to seal joints, seams, and gaps in various materials, such as wood, metal, and concrete.