How far should garage door springs stretch?
How far should garage door springs stretch?
Length. Since extension springs have to stretch during the loading phase and contract to help the door raise, length plays a major role in door operation. Extension springs for a 7ft tall garage door are a standard 25 inches and stretch 42 inches. Springs for an 8ft tall door are usually 28 inches and stretch 48 inches …
Can garage door extension springs be too strong?
If your springs are too strong, and if you wind the springs the correct number of turns, the door will not stay on the floor when closed. It will usually not stay in the middle when opened halfway. However, it will stay up when opened fully.
What do you need to know about garage door extension springs?
Also, be sure to replace both extension springs at the same time in order to maintain balance. Garage door extension springs are color-coded to help you identify what type of lifting power and extension spring your garage door requires. Those color codes are as follows: ***This pattern is repeated in 100 pound increments for various sizes.
How big should the spring be on a 7 foot garage door?
Let’s say you’re looking at a seven-foot extension spring 25 x 42. This extension spring is used on a seven-foot garage door. It has a 25-inch relaxed or compressed length and a 42-inch stretched length, which is how far the spring should be stretched when the garage door is closed.
Can you use a 7 foot extension on an 8 foot garage door?
If you use an extension spring with a different first number, you need to adjust your cable length to achieve the necessary 10 percent of stretch when your door is open. Don’t ever use a seven-foot extension spring for an eight-foot garage door.
What to do if your garage door springs are broken?
You may need to use a 2×4 or some other object to pry the garage door open. Place scale under the garage door on the side of the door with the broken extension spring. Do not use a digital scale, as they often will not respond to the door weight changing as rollers no longer stick to the track.
Also, be sure to replace both extension springs at the same time in order to maintain balance. Garage door extension springs are color-coded to help you identify what type of lifting power and extension spring your garage door requires. Those color codes are as follows: ***This pattern is repeated in 100 pound increments for various sizes.
Let’s say you’re looking at a seven-foot extension spring 25 x 42. This extension spring is used on a seven-foot garage door. It has a 25-inch relaxed or compressed length and a 42-inch stretched length, which is how far the spring should be stretched when the garage door is closed.
If you use an extension spring with a different first number, you need to adjust your cable length to achieve the necessary 10 percent of stretch when your door is open. Don’t ever use a seven-foot extension spring for an eight-foot garage door.
You may need to use a 2×4 or some other object to pry the garage door open. Place scale under the garage door on the side of the door with the broken extension spring. Do not use a digital scale, as they often will not respond to the door weight changing as rollers no longer stick to the track.