Kingspan GreenGuard® Butyl Flashing is a self-adhering flashing membrane comprising a polyolefin film with a butyl adhesive. It is available in straight or stretchable alternatives. Kingspan GreenGuard® Butyl Flashing provides high performance water resistance for walls. It adheres across a full range of installation temperatures, ensuring effectiveness in all climates, and it conforms well to irregular surfaces, eliminating gaps that could create water canals.