Garage Door Won't Close All the Way? Here's What to Check

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You press the button, the door starts down, and then it stops short or bounces back up. It's one of the most common garage door complaints we hear about from homeowners in The Villages, and the good news is that many causes are simple to check yourself. Here's how to work through it safely, and when it's time to stop and get help.

First, notice exactly what the door does

The symptom tells you a lot about the cause:

• The door goes down, touches the floor, then reverses. This usually points to the opener's close-force or travel-limit setting, or something on the floor.
• The door reverses partway down, before it touches anything. This usually points to the safety sensors (photo eyes) or something rubbing in the track.
• The door stops partway and stays there. This can be a travel-limit setting, a binding roller, or a mechanical problem with a spring or cable.
• The opener light blinks and the door won't close at all from the remote. On many openers, that's the sensors reporting a problem.

Check 1: The safety sensors

The two small eyes mounted a few inches above the floor on each side of the door send an invisible beam to each other. If anything breaks that beam, or if they're knocked out of line, the opener won't close the door, or will reverse it. In our area, the usual culprits are:

• A golf cart charger cord, garden hose, or recycling bin crossing the beam.
• Dust, pollen, cobwebs or a lizard on the lens. Wipe both lenses gently with a soft cloth.
• A sensor bumped out of line by a cart, bike or broom. Most sensors have an indicator light; if one is off or flickering, loosen the wing nut, aim it at the other sensor until the light is steady, and tighten it again.
• Strong low morning or late afternoon sun shining straight into one sensor. If the problem only happens at certain times of day, this may be why.

Check 2: Anything on the floor or in the tracks

Look along the floor line for pebbles, a doormat edge, or debris washed in during a summer storm. Then look at the vertical tracks on each side. Leaves, a dent in the track, or a loose bracket can make a roller drag, and many openers treat that extra resistance as an obstruction and reverse.

Check 3: The bottom seal and the floor

A rubber bottom seal that has hardened or torn in Florida heat can catch on the floor. Some garage slabs also settle a bit over the years, so one side of the door touches before the other. If the door is hitting the floor and bouncing back, the seal and the floor are worth a close look.

Check 4: The opener's limit and force settings

Openers have settings for how far the door travels down (the close limit) and how hard it pushes before it decides something is in the way (the force). Heat, a new seal, or normal wear can make these drift. Your opener's manual explains how to adjust them for your model; newer openers often do this with buttons on the motor unit, while older ones use adjustment screws.

Be careful here. Turning up the close force to make the door "just close" can defeat the safety reverse that protects people, pets and cars. After any adjustment, test the auto-reverse by laying a roll of paper towels on the floor under the door. The door should reverse when it touches it. If it doesn't, don't use the opener until it's corrected.

Check 5: Try the door by hand (only if it's safe)

With the door fully closed, pull the red emergency release cord to disconnect the opener, then lift the door a little by hand. A balanced door moves smoothly and stays roughly in place when you let go partway. If it feels very heavy, slams down, or is crooked, stop. That usually means a spring or cable problem, and those parts are under high tension. Don't try to adjust or replace them yourself. Our broken spring guide explains the warning signs.

When to stop and call a technician

• A spring has a visible gap, or a cable is frayed, loose, or off its drum.
• The door is crooked or one side is lower than the other.
• A roller has come out of the track, or the track is bent.
• The opener hums, grinds, or strains but the door barely moves.
• You've checked the sensors and settings and the door still won't close reliably.

A door that won't close is also a security issue, especially if you travel or spend time up north part of the year. If you're in The Villages or nearby ZIP codes like 32159, 32162 or 32163 and the checks above didn't fix it, request a local garage door technician and describe what the door is doing. That detail helps them come prepared with the right parts.

Also see: Garage door opener not working? 7 checks before you call.