The rollers along the edge of the garage door should be inspected at least twice a year and replaced every five to seven years. During your inspection, replace any rollers you find that are chipped, cracked, or worn. Most of the rollers can be removed by simply removing the brackets holding them to the door.
Warning: Do not remove the bottom roller bracket on each side of the door because these are attached to the lift cables, which are under extreme tension.
Call Scandia Doors (612) 300-7736