As a rule of thumb, a single garage door takes one torsion spring. A double-wide garage door takes two springs. However, if you have an exceptionally heavy single door, you may need two torsion springs. It is easy to tell whether you have one or two springs.
How many turns on a garage door dual spring?
A rule of thumb with springs is that four quarter turns equals a full revolution and the spring needs to be tightened a full revolution for every foot of door height (e.g. 7-1/2 foot door = 7 revolutions +2 (30 quarter turns).
How do I know what size torsion spring I need for my garage door?
How to Measure and Order Your Replacement Torsion Springs
- Step 1: Determine the Wind Direction. Look at the end of the spring to determine the wind direction. …
- Step 2: Measure the Wire Size. …
- Step 3: Measure the Inside Diameter. …
- Step 4: Measure the Overall Length.
Why do some garage doors only have one spring?
Why Was There Only 1 Spring Before? Most home builders cut corners in one area to make other areas of the home more appealing. Unfortunately, the garage door is an area of where they cut expenses by installing only one torsion spring on a standard 16’x7′ garage door when there really should be two.
What is the right spring for my garage door?
With most new garage doors there will be two torsion springs separated by a divider that’s located at the midpoint of the door. The spring to your right is a “left wound spring” and the spring to your left is the “right wound spring”. So if the spring to your left is broken you want to order a “right wound spring”.
Do I need 2 springs on my garage door?
If the spring breaks as your garage door is closing, or if the door is disengaged from the opener when the spring breaks, the door often slams down like a guillotine. … Installing a second garage door spring will minimize this risk. When one spring breaks, the second will usually minimize the damage to property and life.
Can garage door 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.
How many turns on a 7ft garage door spring?
Raise the second bar 90 degrees and insert the first bar. This is “three.” Continue winding. If the spring shortens in length, unwind the spring and switch sides – the spring is on the wrong side. Otherwise, continue winding until you reach a count of “30.” This is 7 1/2 turns, which is normal for most 7′ garage doors.
Why are garage door springs so dangerous?
Garage door springs can be dangerous. The danger lies in what happens if and when the springs suddenly fail. Since the spring is under constant tension, a sudden failure can cause the spring to break apart violently.
Should garage door springs be the same size?
At times the garage door may be designed to take advantage of two different size springs which ensure optimal balance. … However, if the door is not balanced correctly, it will either open too much or too little.
Can a garage door open with one spring?
A garage door with a broken spring should not be opened or closed using an automatic operator. All though some openers can lift the door, you risk damage to the operator and the door. … Bend the opener rail due to the weight of the door pulling on the rail, in less common cases the motor might fall off the ceiling.
Can I use a garage door with a broken spring?
As professionals in the industry, we advise you do not attempt to open your garage door if the spring is broken. … Extension springs on either side of the door, along the rails, help counterbalance the weight of the door as it is raised or lowered. Torsion springs across the top of the door help do the heavy lifting.
Does my garage door need a spring?
These springs are essential for opening and closing your garage smoothly, especially if you have two. … So, your opener doesn’t actually do much lifting – garage door springs are used to lift the weight and provide balance.
How long does it take to replace garage door springs?
Explanation: Garage door spring replacements vary. A typical job would take between 30 mins to 1 hour. The older the parts we are working with the longer the job will take, in most cases.
How much should a garage door spring cost?
Garage Door Spring Replacement Cost. Replacing garage door springs costs $100 to $300 on average. The springs alone typically run $30 to $75 each but you may find them as low as $15 a piece and up to $100 each. Commercial grade springs can run $300 or more.
How do I choose a garage door extension spring?
There are three important pieces of information that you will need to get in order to select the proper springs for your garage door. These are the door height, the spring length without the loops, and the door weight. If you can identify the manufacturer and model number you may not need to weigh the door.