Faulty Springs are a Common Culprit
A crooked garage door is one sign of your door being off-balance, but the issue has more to do with whether the major components of your garage door are working in harmony. Your garage door springs are responsible for storing and releasing the energy that moves your garage door up and down. A malfunctioning or worn out spring is a common way garage doors are thrown out of whack. Observing how your door hangs when it is manually opened halfway will indicate whether the garage door is over-balanced or underbalanced.
If the door moves upward on its own, it is considered “overbalanced,” and tension needs to be released from the springs. If it falls down to the ground, it is considered “underbalanced,” and the springs need to be tightened.
Avoid Future Repairs with Routine Balance Checks
Tightening or loosening springs is a job better left to professionals, but by routinely checking the balance of your door, you’ll be able to spot problems when they are small, less expensive, and easier to fix. If your door hangs crookedly when performing the balance test, it could mean only one of your garage door’s springs is causing trouble. It is still best to replace both at the same time, however. Replacing springs isn’t too hard on the pocketbook. This repair runs somewhere between $150 and $350 in the Sacramento area. You should check the balance of your door a few times a year, but you can expect your garage door springs to last around 10 years, or 10,000-20,000 cycles.