Extension springs do as their name suggests.
What size spring for a 2 car garage door.
Many 16 x 7 garage doors will be designed with a pair of single 8 foot garage door bays separated by a central post or column.
Door must be in the fully open position to remove the tension.
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If you have a sectional double car garage door a 1 2 horsepower motor should be sufficient but a higher power model will operate with less effort and less wear and tear on the motor.
Many home builders do not consider this a structural necessity but a style and price choice for the homeowner.
They extend as your door moves and helps to balance your garage door.
Height of the garage door can also affect the size of the spring or spring combination needed as well.
On a single car door two people can lower the door onto the scale two car doors will require come alongs to lower the door one on each side.
If your garage door has extension springs the springs stretch out as the door closes and retract as the door opens the garage door industry has released a standard color chart for the strength pull for these springs as seen in the table below.
Springs in general last about 10 14 years or 15 20 thousand.
Torsion springs the chart is based on information from the door access systems manufacturers association dasma.
How do i determine torsion spring size for new garage door assuming that i do not have the original torsion spring for information like spring length inside diameters wire size or part numbers.
The standard size for double garage doors is 16 feet wide and 7 to 8 feet high.
1 75 means the inside diameter is 1 inches.
All i know is that it is a 16 x 7 ft 4 panel door weighing approximately 195 lbs and has 4 cable drums.
When replacing garage door springs we always weigh the garage door and figure the ippt to ensure we.
Ratings ranging from 1 2 horsepower to 1 1 2 horsepower are typical for residential models.
Torsion spring inside diameter and overall length in many cases the inside diameter of the torsion spring will be indicated on the stationary cone in between the two springs at the midpoint of the door.
Many of the older extension springs may not have visible paint color on either end of the spring.
Garage door spring size chart.
2 means the inside diameter is two inches etc.
Dasma is a leading organization in our industry that created the guidelines and specifications for garage door springs.
Raise door put vise grips on the track under the bottom rollers both sides of the door remove spring tension.
Torsion springs turn as you open and close your garage door.
If you cannot find the size.
Many homeowners have two cars and need garage space to shelter them both.
