Garage Doors in Sunderland, OntarioDoors for the shop,the bay and the warehouse.

No. Tracks should be clean and dry. Rollers are meant to roll along the track on their own bearings, and a film of lubricant on the track collects grit, thickens in the cold and makes the rollers slide and drag instead. Wipe the tracks with a rag and put the lubricant where it belongs: on the hinge pins, the roller bearings, the spring coils and the bearing plates at the ends of the torsion shaft.

Sometimes, but not always. Once the door runs true by hand, the trolley is reconnected and the opener is checked against its own travel limits and force; those are only reset if that check shows they have drifted, since many openers need no force change after a repair like this. The reversal is then checked against a block laid in the door's path and by interrupting the photo eyes from a safe distance. If the opener strained hard during the event, its arm and bracket are checked too.

The fin is meant to bend against the door with a small, even deflection. That is enough to seal, and it lets the fin spring clear as the door lifts. Pressed hard, it drags on the door face, folds under on the way down, squeals and wears through well before its time, and it adds load to the opener. Set too far off, it leaves a standing gap. The light touch is the setting that lasts.

Yes, more often than people expect. The bottom two panels take the contact, and the edge hinge at that joint bends along with the stile behind it, so the panel edges rub and the roller leans. The damage sometimes only shows as a new squeak at the curve. The technician straightens or renews the stile, fits a new hinge and roller, and checks the strut and track on that side.

Yes, as a rule. The two cables were fitted together, have flexed around their drums the same number of times and have sat in the same slush, so the survivor is close to the end of its life. A new cable beside a stretched one also makes it harder to set the door level. Two matched cables give an even lift and one visit instead of two.

Usually a little. A balanced door presents a much lighter load than a door with a broken spring, so the opener's force settings are reset to suit it, and the travel limits are checked so the door seals at the floor and stops cleanly at the top. The technician then runs the reversal test and the photo-eye check to confirm the safety system responds correctly with the new balance.

Rollers, hinges, bearings and springs benefit from a garage door lubricant once or twice a year. The chain, belt or screw-drive rail is a separate question, since each drive type calls for its own product and schedule from the opener's manual rather than one rule for every unit. The track itself should stay clean and dry, because lubricant there collects grit and makes rollers slide instead of turning. The technician can point out the spots on your door at the end of the visit.

Common choices include embossed steel sections, insulated steel with composite overlays, and wood or wood-faced sectional construction. They differ in weight, surface depth, grain, moisture response and care. Samples are helpful because photographs can flatten texture and alter colour. The chosen construction also guides spring sizing, reinforcement, fasteners and the kind of finish maintenance expected later.

Sections stay in their protective packaging until they can be checked and staged safely. They are stored upright or on padded, non-marring supports as directed, with glass faces separated from tools and rough surfaces. Handling uses the frame and designated lift points instead of the panes or glazing beads, and protective film remains until the instructed stage of assembly.

Useful details include the opening size, curtain material, manual or powered operation, model labels, current door position, recent impact or weather event and the exact point where travel changes. Photos of the full opening, bottom bar, controls and labels can clarify the system. Mention a fire-protection label at the outset so that scope is recognised.