Garage Doors in Grimsby, OntarioA door that liftslike it should.

Usually, and often dramatically. Rollers are the only part of the door that touches the track, so most of a door's clatter starts there. Moving from worn steel or bare plastic wheels to nylon ball-bearing rollers changes the sound more than any other single part. The rest of the quiet comes from the same visit: hinges lubricated, loose bolts tightened, the track squared so nothing rubs. Springs can still squeak on their own, and the technician can treat those separately.

The stem is the steel shaft that passes through the hinge or fixture and carries the wheel. Most residential doors use a four-inch stem through a single hinge. Heavier doors have two hinges stacked at the ends of each section, and those need a seven- or ten-inch stem so the shaft reaches through both. A short stem in a double hinge sits loose, lets the wheel lean, and is a common reason a door leaves its track. The technician counts the hinges before choosing the set.

Move vehicles out of the garage and clear anything stored against the walls near the tracks so both sides are reachable from floor to ceiling. If it is safe to do so, note where in the travel the noise or hesitation happens and whether any wheel looks chipped, crooked or riding on the track edge. Have the door's make and the date of any spring work handy if you know them. Leave the door as it is; there is no need to lubricate or adjust anything first.

Yes, and this is exactly why the door is weighed. A solid wood door or a thick insulated steel door can weigh far more than a single-skin steel door of the same size, so it needs heavier wire, a larger coil or a second spring to balance. The technician measures the actual weight and selects accordingly, so the finished door lifts as easily by hand as a lighter one.

They do, slowly. The infrared emitter and the receiver dim over many years, lenses craze or cloud from sun and salt, housings crack, and water finds its way in at floor level. A pair that needs re-aligning more and more often, or whose light drifts between steady and flickering with nothing touched, is usually ageing. Because pairs are matched to the opener, an older opener is worth identifying early so the right replacement is on hand.