Garage Door Repair in Dorval

Much of Dorval was built out over a fairly concentrated period, so original garage hardware in unrenovated homes tends to reach end-of-life around the same time — springs and openers installed decades ago are the most common repair calls we get here.

Yes — we service original hardware from Dorval’s older housing stock as well as newer openers and doors installed during renovations or infill construction.

Uneven movement almost always means one torsion spring has broken or lost tension, or a cable has slipped off the drum. One side of the door is carrying more load than the other. Stop using the door until a technician inspects the spring or cable — continued use accelerates damage to the tracks and opener motor.

The most common sign is a loud bang from the garage — often described as a gunshot — followed by a door that feels extremely heavy when lifted manually. You may also see a visible gap in the spring coil, or the door will only open 6 inches before the opener disengages. Never force the door open with a broken spring.

Grinding usually points to dry or worn rollers, loose hardware, or a track section that has bent or shifted out of alignment. Metal-on-metal contact inside the track is the most common cause. Lubricating rollers, hinges, and the spring shaft with a garage door-specific product (not WD-40) resolves most grinding issues.

We strongly advise against it. Torsion springs store significant mechanical energy under tension. Improper handling during winding or unwinding can cause severe injury. Spring replacement requires calibrated winding bars, precise tension settings matched to door weight, and hands-on safety experience — not a DIY job.

This is almost always a sensor issue. The two photoelectric sensors at the base of the door must be properly aligned and free of dirt or moisture. When the infrared beam is interrupted or the sensor bracket has been knocked out of position, the door reads a false obstruction and reverses. Cleaning the lenses and re-aligning the brackets usually resolves it immediately.

Garage door spring life is commonly described in operating cycles, with one cycle meaning one complete opening and closing. Actual service life depends heavily on the spring design, door setup, usage frequency, environment, and maintenance, so translating a cycle rating into a fixed number of years is not reliable. Higher-cycle spring options are available for doors that see frequent use.

Cables fail from metal fatigue, rust and corrosion along the cable length, fraying where the cable wraps around the drum, or sudden overload caused by a broken spring transferring uneven weight onto a single cable. Cables rarely snap without warning — visible fraying or individual strand breakage are early signs to watch for.

Off-track doors result from a broken cable (which drops one side suddenly), a vehicle impact with the door frame, a worn roller that has jumped out of the track channel, or a bent track section. An off-track door must not be forced open or closed — it is a safety hazard and will cause additional damage to the door panels and hardware.

Every 6 months: lubricate all rollers, hinges, and the torsion spring shaft using a lithium-based garage door lubricant. Inspect cables visually for fraying. Have a trained technician check door balance — this isn't something to test yourself. Check the bottom rubber seal for cracking and inspect the weatherstripping on the sides.

Operating a door with a broken spring can place abnormal load on the opener and other hardware, since the counterbalance system is no longer working normally. Continued operation can increase the risk of additional damage and unsafe door movement. Stop using the door and arrange a professional inspection before operating it again.

An uneven bottom gap between the door and the floor almost always points to a broken or weak torsion spring, a cable that has come off its drum, or a roller that has exited the track on one side. Stop operating the door immediately — running an unbalanced door forces the opener into override and bends the bottom panel over time.

Cold weather can affect the behavior and flexibility of metal components, including garage door springs. The exact effect varies with the spring, door setup, temperature, condition, and usage, so we do not apply a single universal temperature threshold. Standard lubricants thicken in extreme cold and lose effectiveness on rollers and hinges. The rubber bottom seal can freeze to the concrete and tear when the door opens. We recommend a pre-winter lubrication service in October using low-temperature rated grease.

Worn rollers produce a grinding or squealing noise as the door moves. Visually, look for flat spots or chips on the roller wheel, and check if the roller is wobbling or tilting inside the track bracket. Nylon rollers typically last 10,000 to 15,000 cycles before the wheel surface degrades. Replacing them before full failure prevents track damage.

Noise accumulates gradually from roller wear, dry hinges, loose nuts and bolts on the track brackets, and spring fatigue. Metal rollers amplify vibration through the steel track more than nylon rollers do. In most cases, tightening all hardware, lubricating every pivot point, and replacing worn nylon rollers substantially reduces door noise, though results vary by door and cause.

Once per year for most residential doors in normal use. For high-use doors (three or more cycles per day), every 6 months is recommended. A professional service visit covers lubrication, full hardware inspection, spring and cable tension check, balance test, and sensor alignment — catching developing issues before they become emergency repairs.