Bostik Flashband 225mm x 10m Grey is a flexible, self-adhesive bitumen flashing tape designed for instant waterproof sealing across a wide range of surfaces. Its four-layer construction delivers exceptional durability, tear resistance, and weatherproofing. Ideal for roof repairs, gutter sealing, pipe insulation, and glazing protection, this lead-free tape applies easily with hand pressure and a seam roller—no special tools required. Suitable for both new builds and emergency maintenance, it bonds to brick, masonry, slate, concrete, timber, metal, glass, roofing felt, and rigid plastics