WD-40 is a degreaser, which could remove remove lubricant and dry out the garage door springs. This can cause unnecessary friction in the springs and lead to early failure. While WD-40 has many valuable applications, it is not recommended to use it on your garage door's springs.
If it's higher than four feet off the ground, or lower than three feet, you'll know it needs to be realigned. Use a ladder as a brace to keep the door safely open while you're working on it. This also takes the pressure off the springs so you can inspect them for rust and warping.
While basic plastic rollers usually only last a couple of years, steel rollers and nylon rollers can last a long time. The life of your rollers also depends on the average number of daily cycles your garage door goes through, or how many times it opens and closes on a daily basis. May 16, 2022