Vapor Barrier Tape, Moisture Barrier Seam and Seal Tape for Crawl Space Encapsulations or Marine Use, Waterproof 9 Mil Poly Tape (4" x 180', White) : Amazon.co.uk: DIY & Tools
50mm Novia Double-Sided Butyl Tape for VCL
Pro Vapour Barrier Tape System | Jointing Tape | Precon Products