How To Repair a Loose or Sagging Garage Door Chain
Worried about that noisy, sagging garage door chain? Our guide makes DIY repair easy! Quickly tighten it by locating the adjustment nuts on the trolley, loosening them, adjusting the chain tension until it’s ½” above a T-rail or ¼” above a square rail, and then re-tightening the nuts. Get all the details and learn when it’s time to call in the pros.