Garage door repair and installation services in the Greater Toronto Area

Garage Door Repair & Installation in Toronto & the GTA

Certified technicians. Upfront written quotes. Same-visit repairs whenever possible.

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Garage door spring repair by Cornerstone Doors technician

Garage Door Repair

When your garage door stops working, it's not just inconvenient — it's a security issue. We diagnose and fix the problem in a single visit whenever possible.

  • Broken or worn torsion and extension springs
  • Snapped or frayed cables
  • Door off track or misaligned
  • Damaged or dented panels
  • Malfunctioning safety sensors
  • Weather seal replacement
  • Roller and hinge replacement
  • Noisy or jerky door movement

Our technicians arrive with a fully stocked van — most common parts are on board so we can complete the repair the same day. You'll receive a written quote before any work begins. If the scope changes due to something discovered during the repair, we stop and get your approval first.

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New garage door installation by Cornerstone Doors in the GTA

Garage Door Installation

Whether you're replacing an old door or installing one for the first time, we supply and install garage doors built to handle the full range of Ontario weather.

  • Steel insulated doors — R-12 to R-18 (recommended for GTA winters)
  • Traditional raised-panel and contemporary flush styles
  • Full-view aluminum and glass doors
  • Custom-sized doors for non-standard openings
  • Residential and commercial applications

We'll walk you through your options at the estimate — style, insulation rating, material, and hardware finish. Once you decide, we handle delivery, removal of the old door, and complete installation. Your new door is backed by the manufacturer's warranty on parts and our lifetime warranty on the installation labour.

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Garage door opener installation and repair by Cornerstone Doors

Opener Installation, Repair & Replacement

Your opener is the part of the system that gets used the most. When it starts acting up — or stops working entirely — we can have it sorted the same day.

  • Diagnose and repair opener faults (motor, drive belt, chain, circuit board)
  • Replace outdated or failed openers
  • Install new openers on existing doors
  • Program remotes and keypads
  • Set up smart-home and Wi-Fi connected openers (LiftMaster, Chamberlain, Genie)
  • Adjust travel limits and force settings

Not sure if you need a repair or a full replacement? Our technician will give you an honest assessment at no charge — including a frank recommendation if repair doesn't make sense for the age and condition of your current unit.

Book an Opener Service

Not Sure What You Need?

Book a free estimate and our technician will diagnose the problem and walk you through your options — no pressure, no obligation.