The closed-cell polyethylene structure of both types of high-adhesion nail sealant tapes ensures the impermeability of the hole created by the fastening systems. They are available in 5 mm thickness, 70 mm width and double-sided adhesive for more secure sealing. The GEMINI version offers double adhesion and guarantees continuous adhesion between the membrane and batten, avoiding water accumulation in drilled points. With the help of LIZARD unwinder, installation is easy and fast, done directly on the ventilation battens.