Search Good to know! The Ampack-Guarantee Just relax! You are on the safe side with Ampack's 10- and 20-year warranty. They cover: Materials Conversion costs Installation costs Find out more News & Events [...] membrane Two-layer, low-flammable black wind seal for façades with open joints. Fire behaviour: B-s1, d0. Product information Ampacoll Cornerfix - self-adhesive inside and outside corners Pre-fabricated