Springs · Woolwich
Garage Door Balance Adjustment
With the door closed, daylight shows under one bottom corner and the seal is squashed flat at the other.
In plain words
On a torsion door the springs sit on a shaft above the opening, and balance is set by how many turns of wind they carry. A seven-foot door typically needs a little over seven full turns; a quarter turn either way changes how the door feels. The technician clamps the door, fits winding bars into the cone, loosens the set screws, and adds or releases tension one quarter turn at a time, locking the cone again before each test. Both springs on a two-spring door are set alike so the shaft carries the load evenly. That precision is what makes the door hold wherever it is stopped.
How the visit goesThe opener has started to groan on the way up. The door climbs slowly, hesitates near the top, and on the way down it sometimes stops a hand's width above the floor and reverses, as if something were in the way when nothing is.
Garage Door Balance Adjustment
How the visit goes
Extension springs and their containment
On a door with springs along the tracks, the check has a shape of its own. Both springs are compared for length and coil condition with the door closed, since a spring that has stretched further than its partner leaves one side of the door lighter. The pulleys are spun for wear, the cable clips on the track hangers are checked for equal position left and right, and the technician confirms a containment cable runs through the centre of each spring and is anchored at both ends. The bottom brackets and the S-hooks that set the spring tension are inspected for rust and deformation before any adjustment is planned.
Fitting the opener to the balanced door
Once the door holds at every height by hand, the opener is reconnected and treated as its own step. Its travel limits are checked so the door closes fully onto the floor and opens to the correct height without straining against the stops. The force settings are reviewed, and where they had been raised to cope with a heavy door they are brought back to a sensible level, because the door no longer needs the help. The photo eyes are cleaned and aligned. The technician then runs several powered cycles and listens for the motor working lightly and evenly through the whole travel.
Keeping the opener honest
A balanced door lets the opener's safety settings stay at sensible values, and it is worth keeping them there. If the door ever starts to reverse for no reason or struggles to lift, resist the temptation to turn the force up on the motor; that hides a door that has grown heavy again and takes the entrapment protection out of its proper range. Instead, release the door and try the hand test. If it no longer holds, the springs want attention, and a balance adjustment puts the weight back on them so the opener can remain at the gentle settings it was left with.
Garage Door Balance Adjustment
In the van
Replacement hinges
Track clamps or locking pliers
Winding cone set screws
Containment cables
Garage-door lubricant
Garage Door Balance Adjustment
What affects the quote
Opener adjustment and tests
Resetting travel limits and force settings on the opener and running the reversal tests is a short step that follows every balance job and is named in the quote when needed.
Condition of cables and drums
Cables that are fraying or drums with worn grooves found during the check are recommended for replacement while the system is being set, and quoted as their own items.
Weight added to the door
Insulation kits, windows or replacement sections may have taken the door beyond what its springs can carry. Weighing the door and specifying new springs to suit is quoted separately from a simple adjustment.
What to have ready
- Is it a single or a double door, and roughly how tall?
- Does the opener strain, stall, or reverse before reaching the floor?
- Is there a spring on a shaft above the door, or springs along the tracks?
Garage Door Balance Adjustment: questions
QuestionsShould I lubricate anything after the visit?
A little, twice a year. Use a product sold for garage doors on the spring coils, hinge pins, roller stems, bearings and bracket pins, and cycle the door a few times to work it in. The tracks want a wipe, not a spray, because a slick track lets the rollers skid and gathers grit. Skip thick grease. Low friction is what lets the springs' setting hold true.
How long do garage door springs last?
Springs are rated in cycles, one cycle being an open and a close. A standard residential spring is commonly rated for around ten thousand cycles, which for a family using the door several times a day works out to roughly seven to ten years. Higher-cycle springs are available. As a spring nears its rating it loses tension, which is often why a balance adjustment is needed.
Is this something I can do myself?
The hand test, yes, and it is a good habit. The adjustment itself is a job for a trained technician, because the springs, cables, drums and bottom brackets are under high tension whenever the door is closed, and the industry's own guidance reserves any change to them for someone with the right bars, clamps and method. Leaving that part to the visit keeps the whole thing uneventful.
Related services
- Garage Door Hinge ReplacementOn the old wood door, one hinge has pulled away from the panel, dragging a screw and a chunk of soft timber with it.
- Garage Door Track Repair or ReplacementAfter a decade of slushy winters the bottom foot of the track is flaking rust.
- Garage Door Cable ReplacementThere was a sharp crack from the garage, and when you went to look the door had dropped on one side and jammed.