We’ve had our door over four years and it has been basically a good part of a bigger project. All the staff have been exceedingly helpful when we’ve had issues, including sending through excellent technical information to help us through. However, we’ve been disappointed about regular breakages to the straps which attach the door itself to the roller, often causing the safety brake to trip out (a 2 man job on ladders to fix) and causing some cosmetic damage to the door itself. I’m getting tolerably proficient at getting things working again, but would rather not have the issues in the first place.