Super G&R Garage Door Repairs gets asked about garage door security by Calgary homeowners more every year, and for good reason. The garage is often the least protected entrance to the house. It holds vehicles, tools and bikes, and in most homes it opens straight into the kitchen or mudroom. A thief who gets through the garage door is usually inside the house within a minute. This guide covers the weak points we see on service calls, the fixes that actually work, and the habits that matter more than any gadget.
How thieves get through a garage door
Understanding the methods makes the fixes obvious. On residential doors in Calgary, we see four main approaches.
The emergency release fish
The red release cord hangs from the opener trolley. A thin tool slid through the gap at the top of the door can hook that cord and pull it. The door disconnects from the opener and lifts by hand. This takes seconds on a door with a loose top seal.
The stolen or cloned remote
A remote left on a car visor is an open invitation. Cars parked on the street or in driveways get broken into for the remote alone. Older fixed-code remotes can also be copied with simple electronics.
The side door and windows
Many attached garages have a man door with a flimsy lock, or windows that show exactly what is inside. Both get more attention from thieves than the overhead door.
The door that was simply left open
Calgary Police crime prevention advice consistently lists open garage doors as a leading factor in garage thefts. Their community safety resources are available on the Calgary Police Service website. Most garage entries are not forced at all.
Weak points and fixes
The table below matches each weak point to a practical fix, roughly in order of how often we recommend it.
| Weak point | Risk | Fix |
|---|---|---|
| Emergency release cord reachable | Fished open in seconds | Shield the release, tighten the top seal, remove the pull handle |
| Remote in the car | Door opens for anyone with the remote | Use a keychain remote or a smartphone opener instead |
| Fixed-code opener (pre-1995) | Remote can be cloned | Upgrade to a rolling-code opener |
| Worn or missing top seal | Wide gap for tools | Replace weatherstripping |
| Windows in the door or garage | Thieves see what is inside | Frost the glass or add film |
| Man door with a basic knob lock | Kicked in easily | Deadbolt, reinforced strike plate, long screws |
| Opener has no lock or vacation mode | Remotes work while you are away | Use the lock button or unplug the opener |
| Door with no manual lock | Can be lifted when disconnected | Add a slide bolt or lock the track |
Two of these fixes handle most of the risk: shielding the release and getting the remote out of the car.
Shielding the emergency release
This is the first thing we address on a garage door security visit. There are several ways to do it.
- Fit a small shield or plate over the release lever on the trolley so a hook cannot catch it
- Remove the pull handle from the cord and leave a short loop; the release still works from inside
- Replace a worn top seal so there is no gap to slide a tool through
- Add a strut to a top panel that flexes when pushed inward
The release must still work from inside for emergencies. A zip tie through the lever, which some guides suggest, can prevent the door from being released when you actually need it. Our technicians install shields that keep the safety function while blocking outside access. More on top seals is on our bottom seal and weatherstripping service page.
Upgrading the opener for better garage door security
The opener is where most of the technology lives. If yours is older, an upgrade brings three security gains at once.
Rolling codes
Every modern opener uses a rolling code, which changes on every press. A cloned signal is useless. Openers from the early 1990s and earlier may use a fixed dip-switch code that anyone with the right tool can read.
Smartphone control and alerts
Wi-Fi openers send an alert when the door opens and let you close it from anywhere. Forgetting the door open on the way to work stops being a problem. You can also check the door at night without going outside.
Timer-to-close
Many units can be set to close automatically after a chosen time. This is the simplest defence against the open door, which remains the leading cause of garage theft.
Our opener repair and installation page lists the units we install and the features each supports.
Securing the door itself
A strong opener means little if the door lifts by hand. Older doors and doors that have been disconnected often lack any physical lock.
- Add a slide bolt or padlock through the track just above a roller; the door cannot lift past it
- Check that the bottom brackets and hinges are tight; a loose door flexes and gaps appear
- Make sure the door is balanced, so it stays fully closed rather than drifting open a few centimetres
- On a detached garage, treat the overhead door like an exterior door and lock it every night
Doors in older inner-city garages are the most frequent problem. Many are wood, warped, and closed with a hasp that a screwdriver defeats.
Habits that beat hardware
Hardware only works when people use it. These habits close the remaining gaps.
- Close the door every time, even for a short trip to the store
- Keep the interior door between garage and house locked
- Take the remote inside; never leave it on the visor
- Use the wall console lock button when you travel
- Frost or cover windows so tools and bikes are not on display
- Add a motion light at the driveway; thieves prefer dark doors
- Check the door and locks after any service or move; a disconnected opener leaves the door unlocked
Calgary winters add one more. A door frozen to the floor is often left partly open after someone forces it. Free it properly, then close it fully.
When to book a garage door security check
We fold a security check into every service visit, but a dedicated inspection makes sense if:
- You have moved into an older home and do not know the door's history
- The opener is pre-1995 or has no rolling code
- There has been a break-in nearby
- The release cord is easy to see from outside
- The door drifts or does not close fully
An inspection covers the release shield, seals, locks, opener age and door balance. If anything needs work, you get an upfront written quote before we proceed. Our garage door repair service covers the hardware side.
Frequently Asked Questions
Can someone really open my garage door with a coat hanger?
Yes, on many doors. A hook slipped through the top gap can pull the emergency release cord in seconds. A release shield, a tight top seal and removing the pull handle stop this.
Is a smart opener safer than an old remote?
In most cases, yes. Modern openers use rolling codes that cannot be cloned, and smartphone apps let you check and close the door from anywhere. The biggest gain is knowing the door is closed.
Should I zip-tie the emergency release?
We do not recommend it. The release must work from inside during a power outage or a fire. A shield over the lever protects against fishing while keeping the release usable.
What is the single most effective garage door security step?
Closing the door every time and keeping the remote out of the car. Most garage thefts in Calgary involve an open door or a stolen remote, not a forced entry.
Contact Super G&R Garage Door Repairs
For a garage door security inspection or upgrade in Calgary, call Super G&R Garage Door Repairs at (825) 438-2406. We are open Monday to Sunday, 7:00 AM to 9:00 PM, with emergency service available 24/7, and we serve Calgary, Airdrie, Okotoks, Chestermere, Cochrane and High River.