Winter Garage Door Maintenance in Ontario: A Complete Checklist

Durham Region winters are hard on garage doors. Freezing temperatures thicken lubricant, metal parts contract, road salt corrodes hardware, and ice can glue the door to the floor. Springs also tend to fail more often in the cold, which is why so many "my door won't open" calls come on the first frigid mornings of the season.

A little preparation in the fall goes a long way. Here's the checklist we recommend.

1. Watch and listen to the door

Open and close the door a few times and pay attention:

• Does it move smoothly and evenly on both sides?
• Do you hear grinding, scraping, or popping?
• Does it hesitate, jerk, or reverse unexpectedly?

Problems that are minor in September often get worse once the temperature drops. If something sounds off, deal with it before winter.

2. Lubricate the moving parts

Use a lubricant made for garage doors (white lithium or silicone-based spray). Avoid heavy grease, which attracts dirt and stiffens in the cold. Apply lightly to:

• Hinges
• Roller bearings (not nylon roller wheels)
• The springs
• The opener's chain or screw drive, if your manual recommends it

Wipe off any excess. Don't lubricate the tracks themselves; that just collects grime.

3. Check the weatherstripping and bottom seal

The rubber seal along the bottom of the door keeps out snow, rain, leaves, and cold air. Over time it cracks, hardens, and tears. Look for daylight around the edges of the closed door. Replacing worn weatherstripping is inexpensive and makes an attached garage noticeably warmer.

4. Test the door's balance

Balance tells you whether your springs are healthy.

1. Close the door and pull the emergency release to disconnect the opener. Only do this with the door fully closed.
2. Lift the door by hand to about waist height and let go carefully.
3. A balanced door stays roughly in place. If it drops or rises on its own, the springs need adjusting.
4. Close the door and reconnect the opener.

Spring adjustment is a job for a technician. Our broken spring guide explains why.

5. Test the safety reverse

Lay a piece of wood (a 2x4 on its side works) flat in the doorway and close the door. It should reverse as soon as it touches the wood. Then close the door and wave an object through the photo-eye beam; the door should reverse. If either test fails, stop using the automatic opener until it's fixed. Our safety sensor guide has details.

6. Keep ice and salt under control

• Clear snow and slush from the doorway so meltwater can't pool under the seal.
• If the door freezes to the floor, don't force it with the opener. Loosen the seal carefully with a plastic scraper or low heat.
• Rinse salt spray off the bottom section and hardware on mild days. Salt accelerates rust on steel doors, brackets, and cables.
• A thin coat of silicone spray on the bottom seal helps stop it bonding to ice.

7. Check the opener and its backup

• Replace remote and keypad batteries before the cold hits; cold drains them faster.
• If your opener has a battery backup, test it by unplugging the opener and running the door.
• Make sure every driver knows how to use the emergency release safely, in case of a power outage.

8. Look for early warning signs

Call a technician before winter if you notice:

• Frayed lift cables
• Rust or gaps on the springs
• Loose or bent track brackets
• Cracked or wobbling rollers
• A door that's hard to lift by hand

Consider a professional tune-up

A pre-winter tune-up from our garage door service covers inspection of springs, cables, rollers, hinges, tracks, and the opener, plus lubrication, balance testing, and safety checks. It's much easier to schedule a tune-up in the fall than to wait for a breakdown on the coldest day of the year.

Frequently asked questions