A small crack in your windshield has a way of becoming a much bigger problem overnight. What starts as a tiny chip from a pebble on the 401 can creep across the glass within days especially with Toronto’s temperature swings doing their thing. The good news? If you catch it early and handle it right, you can often stop it from spreading altogether.
Here’s what actually works.
Do These Things Right Away

The moment you spot a crack, a few simple steps can buy you time before getting it properly fixed.
- Keep it out of temperature extremes: Heat and cold are your biggest enemies here. Avoid blasting the defroster directly on a cracked windshield, and if possible, park in a garage or shaded spot rather than leaving it baking in the sun.
- Drive a little more carefully for now: Road vibrations, rough patches, potholes — all of that puts stress on the glass. You don’t need to avoid driving entirely, but take it easy on the bumpy stretches until you get it looked at.
- Cover it temporarily: A strip of clear packing tape over the crack keeps moisture and dirt out. It won’t fix anything, but it slows the damage down while you arrange a repair. Just avoid anything that leaves adhesive residue directly on the glass.
How Bad Is It, Really?
Not every crack is the same, and knowing what you’re dealing with helps you make the right call.
- Size matters: Cracks under three inches are usually good candidates for repair. Anything longer or damage that’s spreading in multiple directions often means a replacement is the smarter move.
- Location is just as important: A crack sitting right in your line of sight is a safety issue no matter how small it is. Same goes for cracks near the edges, which tend to spread faster and can affect the structural frame of the glass.
- Type of damage: A single chip or short crack is very different from a starburst pattern or a crack that’s already started branching. The latter usually means the glass has taken a harder hit and there’s more going on beneath the surface.
When in doubt, have someone take a look before you decide. A quick inspection doesn’t take long and could save you from paying for a full replacement when a repair would’ve done the job fine.
Your Actual Repair Options
- DIY kits from the auto parts store are fine for very minor chips in a pinch, but they have real limits. Application is trickier than the packaging suggests, and results can be inconsistent. Most insurance policies in Ontario also cover professional chip repair at no extra cost so there’s rarely a good reason to go the DIY route.
- Professional windshield crack repair is almost always the better call. A certified technician injects a specialized resin into the crack under controlled conditions and cures it properly. Done right, the repair restores structural integrity and is barely noticeable. If you’re looking at windshield crack repair in Toronto, most reputable shops offer same-day service so there’s really no reason to keep putting it off. The longer you wait, the more likely a repairable crack turns into a full replacement situation.
- Full windshield replacement is necessary when the crack is too large, too deep, or in a spot that can’t be safely repaired. It’s not as big a deal as it sounds. A trusted auto glass shop in Toronto can usually have it done the same day, and the new glass is installed with OEM-spec adhesives and seals.
Simple Ways to Avoid This Next Time
Once your windshield is sorted, a few habits go a long way:
- Give more space to trucks and gravel-haulers on the highway, most chips happen fast and without much warning.
- Do a quick visual check every few weeks, especially after winter when the roads are at their worst.
- Deal with small chips before they become cracks, a 20-minute repair job today could save you a full replacement bill next month.
Get It Fixed Before It Gets Worse
If you’ve got a crack right now, don’t sit on it. What’s repairable today might not be by next week and a cracked windshield isn’t something worth gambling with.
National Auto Glass Toronto has been doing car glass repair in Toronto and across the GTA for over 20 years. Same-day auto glass repair is available, and every job is backed by a lifetime warranty.
Give us a call at (416) 666-7345 to book — most repairs are done the same day, and it only takes a minute to get scheduled.
