If you have two torsion springs on your garage door, the good spring will most likely keep the cables on the drums when the other spring breaks. This makes it much easier to lift because the good spring will be pulling half the weight of the garage door. You can also use the garage door opener to help assist while someone lifts the door and acts as the broken spring. Use extreme caution when doing this to prevent damage to your garage door or injury to a person.
If you are not sure if your door had the correct springs, we recommend that you weigh your door using an analog scale. From my own field experience I would estimate that at least 10% of the doors have the incorrect springs on them. In addition to this, most manufacturers spring their doors using a 20 pound window. We like to improve the garage door balance.
In order to prevent injury, garage doors automatically reverse if they come into contact with an obstacle. When the door closes halfway but then reverses for no apparent reason, this may be a sign that there is something preventing it from closing, something that you can't see. Check the tracks for stuff like dirt, rocks, bits of trash, or other debris. Give the tracks a wipe-down to dislodge anything that might be getting in the way.
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Garage door springs are part of the garage door, and they're the first part to check when the door doesn't work; they malfunction more commonly than other parts of the door. In fact, the door cannot open or close with damaged springs. They raise and lower the door using one of two different methods: torsion or extension. The traditional choice for garage doors is extension springs, which sit above the door's horizontal track. They're more affordable than tension springs, making them a popular choice among builders, but they have more exposed parts and are more likely to break than tension springs. For this reason, extension springs must have safety cables to support them if they break. Tension springs attach to the wall above the garage door and work by twisting spring coils around the shaft as the door moves. These springs can support more weight than extension springs and have fewer exposed parts so they last longer.
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The cost to repair a garage door is typically more affordable than installing a new garage door. Often, a garage door repair simply requires fixing a broken spring. The average cost to repair a garage door spring is $180, but prices range from $100 to $350 if the installer must disassemble the brackets to reach the springs. Common garage door repairs include lubricating or balancing the springs and installing safety cables that work as a backup for an extension spring system. Most homeowners can lubricate the springs on their own for the cost of the lubricant ($5 to $6), but many garage door contractors include lubrication services as part of their maintenance plans. Refitting existing springs to balance the door requires between 45 to 90 minutes to complete, with a price tag ranging from $75 to $110. Safety cable installation costs between $150 and $200.
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In this article, we’ll tell you the difference between a safe door and one that’s unsafe. We’ll also give you the helpful tips you’re not likely to find in the manufacturer’s instructions to correctly, and safely, install a new garage door with a torsion spring and do-it-yourself tensioning. Installing a new, double garage door yourself will save you several hundred dollars and should take eight to 12 hours if you’re fairly handy. You can do most of the new garage door installation project yourself, but you should recruit help for removing the old door. http://www.youtube.com/watch?feature=player_embedded&v=Z_eZc-kh40c
DIYers are generally steered away from working with torsion springs because installed springs are always under tension. To safely remove a torsion spring, you have to control the tension by holding the spring with a solid metal winding bar, then you loosen the spring from the rod and manually unwind the spring using two winding rods. The spring is potentially dangerous until it is fully unwound. By contrast, extension springs have little or no tension when the garage door is fully open.
If you have decided to replace your springs, if you are sure your door had the correct springs, and if you are ready to buy new ones, we recommend that you measure your spring or springs following the instructions in Step 4 below. Measuring springs can be difficult; most individuals, even garage door technicians, sometimes have difficulty measuring torsion springs. Ordering incorrect springs wastes time and money.