Step 6: Add the Extension Springs

worker installing one of the garage door extension springs to the garage ceiling
Photo: Kolin Smith
Two springs counteract the weight of the door and make it easier to lift. Before we can attach the spring, we lift the door open and tighten C-clamps to the tracks to prevent the door from closing. One end of each spring hooks on to an open eyebolt threaded to the metal hanger; the other end connects to a sheave or pulley wheel. To keep the springs from sagging below the track when the door is opened, we stretch a steel cable horizontally through the center of each spring.
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    Tools List

    • drill
      Impact driver, for driving screws through hinges and brackets
    • locking pliers
      Locking pliers, used to hold open the door while the spring is attached
    • ratchet wrench
      Ratchet wrench, used to tighten nuts on machine screws
    • ladder

    Shopping List

    Sectional garage door, hinged panels that roll on tracks

    Assorted garage-door hardware and tracks, used to support the door in doorway opening

    Decorative hardware,to mimic handles on traditional outswing doors