How To Figure Out Extension Springs Garage Door

In addition to having the weight and height of the door recorded torsion springs need additional measurements for replacement.

How to figure out extension springs garage door.

Choosing springs that can support the weight will provide you with a properly balanced door. Garage door springs must properly match the door s weight. Measure 10 coils to the nearest 1 16. Extension springs for one piece doors are different and won t work for sectional doors.

For a more accurate measurement start at the 1 mark on your ruler. Change the fraction into a decimal and divide by 10. The spring to your right is a left wound spring and the spring to your left is the right wound spring. For a single car door place a bath scale in the center of the opening remove all spring tension from the door and lower the door onto the scale.

Measure the spring from the first to the last coil. Measuring the garage door extension springs first measure the length of the spring. Most extension springs for 7 foot high doors are 25 inches long with a 42 inch stretch. Suspended halfway up or down the door.

This is the wire size. Stay flat on the floor when closed. 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. 2 weigh the door.

Determining the correct spring for your door can be done one of several ways. The spring should be measure as it is unwound. For an 8 foot high door the spring would be 28 inches long with a 48 inch stretch. Let s say you re looking at a seven foot extension spring 25 x 42.

The new spring s diameter length and wire size or gauge must be the same as your old spring. This extension spring is used on a seven foot garage door. Once you know the total weight of your garage door using a bathroom scale for doors under 300 pounds you can use the chart below to see the color extension spring you need. Remember to look for springs for sectional garage doors.

Won t have any problems staying open. Knowing the spring s length can help you find the wire size on the chart above. Purchase new garage door extension springs. After you measure the length of this spring you need to measure the diameter of the spring.

1 extension springs are color coated see the chart below and order accordingly. With most new garage doors there will be two torsion springs separated by a divider that s located at the midpoint of the door. So if the spring to your left is broken you want to order a right wound spring.