Using your drill, add tension to the torsion spring. This system uses a single spring for a double door, but many manufacturers use two springs for a double door. The painted line on the spring acts as a gauge for the number of turns you put on the spring. To keep the bar from turning while you’re adding tension, attach a locking pliers to the bar on both ends of the spring. Apply lubricant for garage doors to the spring.
There are many lubricants out there but many garage door experts suggest using WD-40 (or similar light weight oil) twice a year to keep garage doors in working shape. All the moving parts of the door should be lubricated, including the hinges, the springs and the rollers. A bead of oil across the top of the springs will give a nice coating, and spraying the rollers is most effective. Also, it’s a good idea to check your garage door hardware for loose screws, nuts and bolts as you lubricate.
Because garage doors are large, heavy, and mildly complicated, most people who buy them take advantage of these services. But, if you’re pretty adept at DIY tasks, you can save some money and enjoy the satisfaction of doing the job of installing a sectional garage door yourself. (Sectional garage doors travel up and down on rollers that ride along tracks at each side of the garage doorway.)
In many homes, the original garage door was installed during construction of the garage and the builder may have chosen the least expensive model. Decades later, the homeowner may decide to upgrade to a higher quality door. While appearance and cost will likely be the biggest considerations for most homeowners, other factors such as insulation value, ease of operation and safety features should also be considered. A highly rated garage door installation professional can offer more detailed advice.

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