1. Visible Inspection: Regularly inspect the roller shutter doorway for visible signs of wear and tear, rust, or hurt. Examine the alignment in the tracks, the situation in the slats or panels, plus the operation on the opening and closing mechanisms. Of course, roller shutter doors may be fixed. https://edwinujwfp.madmouseblog.com/7278495/the-greatest-guide-to-24-7-all-doors-and-roller-shutter-repairs