There are 2 common types of garage door springs: Torsion springs and extension with torsion, which is most often used for double garage doors. The purpose of having a spring system is to eliminate the weight of the garage door so that the door will be able to be raised up and lowered down by hand or by an automatic motor.
When a torsion spring is broken, the garage door will feel a lot heavier if you try to lift it by hand. Also, the motor will sense that the weight is too high and it won’t be able to lift the door more than about 6 inches off the ground. The reason for the garage door not openening further is to prevent damage to the gear and other parts of the motor.
Properly adjusted garage door springs give you the ability to lift the door manually, and to stop it mid-way, without the door falling down heavily or going up with difficulty. There are a range of torsion spring sizes and lengths, which can vary depending on door materials, insulation, windows, etc.
Garage Service Co carries all standard size springs most commonly used in the Denver area. We complete your spring replacement in the first visit to save customers time and money.