“Every spring on every garage door will break,” says Jim Rice, owner of Broad Ripple Overhead Doors & Openers in Indianapolis. “After so many thousand times up and down, it gets metal fatigue and snaps. At least once a year, you should disconnect the garage door springs and lift the door up manually to see how well it’s balanced. Unless you hear metal screeching or something breaks, you don’t need us.”
Center and level the first section after you install the brackets. The door must be level even if the floor isn’t, so use shims under the section to level it. The rubber gasket on the bottom section will fill the gaps created by an unlevel floor. To hold the level in place, tape it to the section. To hold the section in place, lightly toenail a 16d nail into the frame and bend it over the section. Add brackets and rollers before setting them in place and stack one section on top of another, toenailing as you go up.