Rock Chip or Full Replacement? A Decision Guide for Okanagan Drivers
You're driving Highway 97 between Vernon and Kelowna, a gravel truck overtakes you, a rock kicks up, and there's that sharp tap on the windshield. You glance over: a small chip, maybe a star, maybe a bullseye, sitting in the lower-right of the glass.
What you do in the next 72 hours determines whether this is a $0–$80 repair or a $400–$2,000 replacement.
This guide walks through how to decide — and why the urgency matters more than most drivers think.
The Chip Repair Window
Auto glass professionals will tell you the same thing consistently: a chip is most reliably repaired in the first few days after damage occurs. The reason is physics, not policy.
A windshield is laminated safety glass — two layers of glass bonded around a layer of plastic interlayer. When a rock impacts the outer layer, it creates a small void or starburst in the glass. Repair works by injecting a clear resin into that void under vacuum, displacing trapped air, and then UV-curing the resin to bond the void closed.
The longer the chip sits unrepaired, the more contamination accumulates inside it: water, dust, road salt, oils. Each contaminant interferes with the resin bond. After enough time and enough thermal cycling, the chip may grow into a crack that's no longer repairable — at which point you're replacing the windshield.
In the Okanagan specifically, two factors accelerate this:
1. Thermal cycling. Summer days hit 35°C with windshields parking in direct sun reaching 60°C+. Cold winter mornings drop below freezing. Turn the defroster on a frozen windshield and you've just stressed every existing chip.
2. Highway speeds. Vibration at 100+ km/h propagates micro-cracks faster than urban driving.
A chip that would have remained stable for weeks in a temperate coastal climate can crack within days here.
When a Chip Can Be Repaired
Generally speaking — and ICBC's published guidelines roughly align with industry standards — a chip is a good candidate for repair if:
- It is smaller than a Canadian dollar coin (about 26mm)
- It is not directly in the driver's primary viewing area (some shops repair these but the resin can leave a slight visual artifact)
- It is not deeper than the outer glass layer (i.e., the inner layer is intact)
- It is not at the edge of the windshield (within ~5cm of the frame). Edge chips are structurally compromised and almost always require replacement
- The crack lines extending from the chip are shorter than a few inches
Chip types that repair well:
- Bullseyes — circular impact, stable
- Stars — radiating cracks from a center point
- Combinations — small star inside a small bullseye
- Pits — surface chip with no subsurface damage
When You're Looking at a Full Replacement
A windshield needs full replacement, not repair, when:
- The damage is larger than a coin or has cracks longer than a few inches
- The damage is at the windshield edge — these compromise structural integrity and propagate quickly under thermal or vibrational stress
- The damage runs across the driver's primary viewing area in a way that would leave a visible repair mark
- The inner layer of glass is cracked (you can sometimes see this as a separate crack on the inside surface)
- The windshield is already heat-stress cracked from a temperature shock (these often appear without an impact point)
Why Speed Matters Specifically in B.C.
ICBC's Glass Express coverage is generous on chip repair — many basic and comprehensive policies cover the repair at zero deductible. But the moment that chip becomes a crack and requires full replacement, you're typically into your deductible ($200, $500, or higher depending on policy).
So the cost decision tree often looks like this:
| Damage state | Typical out-of-pocket | Time required |
|---|---|---|
| Chip, repaired promptly | $0 (covered) | 20–30 min |
| Crack <12 inches, edge-stable | Variable | 30–60 min |
| Full crack / replacement, with ADAS | Deductible (often $200–$500) | 2–4 hours |
The 20-minute repair is almost always covered. The replacement is often at least a deductible. The financial gap between handling damage promptly and handling it a week later can be hundreds of dollars.
What to Do in the First 72 Hours
If you've just taken a rock:
1. Look at the chip. Note the size and shape. Take a photo — it's useful for the claim.
2. Cover the chip. A piece of clear packing tape over the chip prevents dirt and water from entering until repair. Do not use duct tape (residue) or anything that could obscure your view.
3. Avoid extreme temperature changes. Don't blast the defroster on a cold morning. Don't pour hot water over a frozen windshield (people do this, and it cracks the glass). Don't park in direct sun if the chip is fresh.
4. Don't drive aggressively. Avoid potholes, hard braking, and sustained high-speed driving until the chip is repaired.
5. Book the repair. Most ICBC Glass Express shops can fit a chip repair in within 1–2 business days. Autofocus Glass handles chip repairs same-day in most cases — phone (250) 762-2207.
When Mobile Service Makes Sense
If the vehicle is parked at home, work, or anywhere a glass tech can reach, mobile chip repair is straightforward — most modern resin systems work fine in a parking lot or driveway as long as the temperature is reasonable and the windshield is dry.
Where mobile service really matters is when the damage is *worse than a chip* and the windshield is unsafe to drive. A long crack across the driver's view is technically illegal to drive in B.C. (Motor Vehicle Act, fitness requirements), and a damaged windshield is also a structural concern in a collision — laminated glass is part of the car's safety cell.
A shop that can pick up the vehicle, complete the work, and return it is the cleaner answer in that situation.
What to Ask Before Booking a Repair
When you call a glass shop for a chip repair quote:
1. *"Is the repair covered under my ICBC policy, and do you bill direct?"*
2. *"What's the warranty on the repair?"* — Most reputable shops warranty against the chip propagating into a replaceable crack
3. *"If the repair fails, do you credit the cost toward a replacement?"* — A standard offer at most quality shops
4. *"Do you handle ADAS calibration if I end up needing replacement?"* — Important for 2018+ vehicles
The Bottom Line
A rock chip is a small problem when handled in the first few days. It becomes an expensive, time-consuming, ADAS-complicated problem when ignored.
Look at it. Cover it with tape. Book the repair. Move on.
For the broader picture of windshield work in the Okanagan, see our guides on the ICBC Glass Express process, why ADAS calibration matters, and signs of a bad windshield install.