Drybase Overseal Tapes seal over joints between cavity drain membranes and other materials. They can also be applied for sealing around services and details. Where heightened protection is necessary (e.g. against ground gases such as radon), Drybase Overseal Tapes can be employed alongside Drybase Double-Sided Sealing Tape to establish a double-seal. The 75 mm width Overseal Tape can be used to seal butt joints and overlaps. Use 150 mm wide Overseal Tape for sealing flange joints on the floor.