The frame of my metal garage door has pulled away from the door. I can see in other images on the web that this frame is not always present. Is the frame for structural integrity or for adding and holding insulation?
Each vertical piece of the frame has a L-shaped piece screwed to it and then glued to the door. This glue had failed at each and every location yet the door operates fine and relatively quietly. Do I need to be concerned about this and/or re-glue?