When you're done watching this video you'll know how to determine whether the company you hired to replace your garage door spring installed the right size spring on your door. You'll also learn the consequences to your garage door opener if the wrong size spring is used. If you are having a problem with your garage door spring, the 2:30 minutes you spend watching this video is time will spent. https://youtube.com/v/Z_eZc-kh40c
2.4 The same is true of Older Overhead, BarCol and Raynor torsion springs that have winding cones with inconsistent hole sizes. If you insert a 1/2" X 18" bar in some of these holes you can move the opposite end of the bar over four inches. Bars in newer cones move less than 1 1/2". I've had many of the older cones spin loose from my bars, the last one generating an $1800 emergency room bill. If your cones are like any of these, or if they have more than 2" of play, leave the job of installing torsion springs to a professional garage door mechanic.
First and foremost, a garage door, by design, contains springs designed to balance your door and make it easier to lift. Those springs are under incredible amounts of tension. If a spring breaks or is improperly released, it can cause incredible and potentially fatal injuries. Keep in mind, when working on a garage door spring, it is likely that your face and head will be close to it, meaning that your most sensitive area will be in the direct path of the released spring.
Extension springs last 15,000 cycles. Every time the door goes up and down is one cycle. On average extension springs will last 7 to 12 years. For most people, you know you need to replace your extension springs because it snaps. Sometimes, however, when extension springs get older, they can lose their tension and the spring becomes elongated. This is rare but it does still happen. Basically, the coils are fatigued and when the door is up you can see gaps where the spring is not relaxing properly. When this happens, the spring is useless. It is best to replace the springs at this point rather than overworking the opener which will cause it to last a shorter life.
If you need to leave the door open until you can make repairs, block the door track on both sides so the door can't move, and unplug the garage door opener (if you have one). If you want to close the door, you can try closing it with the opener, making sure there's nothing in the door's path in case something goes wrong. However, this will put some strain on the opener. Alternatively, you can have a few strong helpers hold the door while you disconnect it from the opener and carefully close the door manually—again, it will be very heavy.
Replacing or repairing garage door panels help the garage door operate properly. This means less headaches just trying to get through the day. In addition to ease of getting in and out of your home replacing or reparing garage door panels help preserve the value of the home. Curb appeal matters, especially if the home is going to end up on the market for sale. Any exterior improvement you do to the front of your home pays dividends in your curb appeal. That being said, garage door panel repair is one of the highest dollar fixes you can do for your garage door. The cost to repair the panel is directly associated to the repairman’s hourly rate. Installation of new panels start at $240 for a 9′ panel and $690 or more for a 16′ panel. If you are thinking about replacing your panels, think twice, you might be able to get a brand new garage door for about the same price. Check your options with your professional before replacing your panels.
No matter what kind of door you are installing, be very careful. The instructions that follow are merely guidelines. You should read your garage door manufacturer's instructions and owner's manual very carefully before attempting either type of installation. And if you're a do-it-yourself greenhorn, skip this project and hire an experienced professional. It may be more expensive, but garage door installation is on the higher scale of DIY difficulty.