When a couple of resourceful American engineers from Kaiser Aluminum designed an innovative roofing system more than four decades ago, they, of course, had great hopes that their new aluminum standing seam roof was going to be a success. Since then, more than 80 million square meters of Kalzip aluminum standing seam roofing has been installed around the world. These pictures will help you to discover just a portion of the history of Kalzip over the last 40 years.