Garage Door Spring Repair
Torsion and extension springs matched to the weighed door, for houses from the Pinecrest ranch lots to the Grove.
A door that will not lift after a loud bang from the garage almost always has a broken spring. The spring, not the opener, does the lifting. Torsion springs sit on a shaft above the door and extension springs run along the horizontal tracks, and either type is wound with stored energy, which is why DASMA tells owners to leave spring work to a trained technician.
A spring is not a stock part. Wire size, length, inside diameter and turn count have to match the weight of the door, and DASMA lists fitting a spring to the wrong door or winding the wrong number of turns among the installation mistakes that shorten spring life. We weigh the door, measure the old spring, replace both springs on a two-spring door and wind to the turn count the door manufacturer specifies. On an extension-spring door we also check that every spring has a safety cable running through it.
Clues That a Spring Has Given Out
- A loud bang from the garage, then a door that will not lift
- A gap of an inch or more in the coil above the door
- The door rises a few inches and settles back down
- The opener runs but the door stays put, or the motor groans
- The door feels far heavier than it used to when lifted by hand
- Rust-pitted coils, or a spring that squeaks and has stretched
🌊 The Biscayne Bay Factor
A spring's rated life is counted in cycles, and one cycle is one full opening and one full closing. A standard residential spring is commonly rated at about 10,000 cycles, which a door used ten times a day reaches in under three years on paper. In South Miami-Dade the salt and moisture in the air work against that number, because DASMA notes that corrosion pits are where fatigue cracks can accelerate. For busy doors we fit higher-cycle, coated springs, and we lubricate the coils at the visit as the door manufacturer's instructions call for.
How a Visit Goes
Weigh and measure
Door weight, spring wire size, length, inside diameter and drum type are recorded so the new springs match the door.
One exact quote on site
One price for the spring set and any worn cable or bracket we find, approved before anything is unwound.
Replace and wind
Old springs come out with winding bars, and new springs go in wound to the manufacturer's turn count.
Balance proof
A correctly sprung door holds at three to four feet; we prove it, reconnect the opener and run full cycles.