Overhead Torsion Spring
If you can't open your garage door manually, and it is very heavy. You may have a broken garage door spring. The overhead torsion spring can be located above the inside of the garage door. If you see a crack in the spring then you must all a qualified garage door company.
Garagerepair.ca offer's all residential garage door overhead spring replacements. Prices range according the weight of the garage door.
Spring Install Rates:
Single Spring: $59
Double Spring: $39