Garage Door Too Heavy to Lift by Hand: Why

A garage door that is too heavy to lift by hand has almost always lost spring tension. A properly balanced door weighs very little to the person lifting it, because the springs carry nearly all of the load. When the springs are worn out or broken, you are suddenly lifting the full weight of the door, which can be many dozens of kilograms for a double door. The cause is usually the springs, sometimes the cables, and occasionally a door that has gained weight over time.

Why does my garage door feel so heavy all of a sudden?

The most likely reason is a broken torsion or extension spring. When a spring breaks, it stops lifting, and the door feels as heavy as it really is. You may have heard a loud bang from the garage in the hours or days before, and you might see a gap in the spring coil above the door. If the door has gradually become harder to lift over months, the springs are probably wearing out rather than breaking.

How are garage door springs supposed to work?

Springs store energy as the door closes and release it as the door rises, counterbalancing the door's weight through the lift cables. The opener is only there to guide the door and add a small push. This is why a good door can sit at any height, halfway open or nearly closed, without moving. If it does not hold its position, the springs are not doing their job.

How do I test whether the door is balanced?

Close the door, pull the red emergency release cord to disconnect the opener, then lift the door by hand to about waist height and let go. A balanced door stays where you leave it, or drifts only slightly. If it drops, the springs are weak. If it shoots upward, they are over-tight. If you cannot lift it at all, stop and do not force it. Lift only if the door moves freely with ordinary effort, and keep fingers away from the section joints, where they can be pinched.

Could a cable be the problem instead of the spring?

Yes. If a lift cable has frayed, slipped off its drum or snapped, one side of the door loses its lift and the door sits crooked and feels heavy and awkward. Check both sides: one side hanging lower than the other, or a cable loose near the bottom bracket, points to a cable problem. We explain this in our guide to a snapped or frayed garage door cable. Do not touch the cables, because they are under heavy tension.

Can the weather or the door itself make it harder to lift?

Sometimes, in smaller ways. Cold weather stiffens grease and can make a marginal door feel heavier, and a door that has been insulated, re-skinned or fitted with extra windows after installation weighs more than the springs were chosen for. Ice or debris in the bottom seal can also make the door drag. These effects are small compared with a broken spring, so if the door feels dramatically heavier, assume the springs first.

Is it safe to keep using the opener on a heavy door?

No. An opener is built to guide a balanced door, not to lift the full weight of an unbalanced one. Running it against a broken spring strains the motor and gear, and it can burn out the opener or drop the door suddenly. Leave the opener disconnected, avoid walking or driving under the door, and keep children and pets away until it is repaired. Our guide on what to do right away after a broken garage door spring covers the steps in order.

What should I do while I wait for a repair?

• Leave the door closed if it is closed, and do not try to force it open.

• Disconnect the opener with the release cord so it cannot try to lift the door.

• Take photos of the springs, cables and any gap in the coil, from a safe distance.

• Do not loosen, tighten or unwind any spring bolts or set screws.

How can regular maintenance prevent a heavy door?

A yearly balance test and a light lubrication catch weak springs before they fail. Springs are rated for a set number of open-and-close cycles, so a door used several times a day wears them faster than one used occasionally. Our once-a-year garage door maintenance checklist includes the balance test and the other checks that take about twenty minutes.

Who can fix a heavy garage door in the GTA?

Modern Empire Doors, at 138 Yorkland St, Richmond Hill, has served the GTA since 2018, is top rated on Google, and answers calls 24/7 on 647-323-1826. We replace springs and cables with the right size for your door's weight, then balance the door so it lifts easily again. Send us a photo of the door from inside and outside, including the spring above the door, and we can usually tell you what is needed before we arrive.