Types of Windscreen Chips and Cracks | Repair or Replace Guide

You noticed a chip or crack. What happens next

You spot it when the light hits the glass just right. A tiny mark. You tell yourself you will deal with it later.

Most of the time, later turns into a longer line.

Windscreen cracks often start with one stone impact. Then, day-to-day driving does the rest. Heat. Vibration. A pothole. A hard door close. Even washing the car at the wrong moment.
If you do one thing today, keep your options open. Get it checked early.

Why small damage turns into bigger windscreen cracks

A chip creates a weak point in laminated glass. Stress moves through the windscreen every time you drive. That weak point takes the hit.

Things that often make it spread
Driving fast behind trucks
Cold water on hot glass
Air con on full blast in winter mornings
Gravel and rough roads
Dust and moisture getting into the break

The quick decision you need to make today

Ask yourself

Is it a chip, or is there already a line forming
Is it close to the edge
Is it in your line of sight

If you are unsure, book an assessment. That early check often means repair stays on the table.

Chip vs crack. A simple way to tell

People call everything a crack. Glass repairers do not, and this is why. The label changes what can be done.
A chip tends to be a point impact. A crack is a line that is travelling.
You will also see different spelling online. In South Africa, most people search windscreen chips and windscreen cracks. Some people still type windshield chips and windshield cracks. Same problem. Same glass. You still want the right fix.

What counts as a windscreen chip

A chip often looks like

A small circle
A tiny crater or pit
A star shape
A half-moon shape
A mix of shapes in one spot

It can stay small for a while. Then one hot day and one bump later, it changes.

What counts as a crack

A crack looks like a line. It might be short today, longer tomorrow. It might start at the edge or sit in the middle.

If you can trace a line with your eye, treat it as a crack, even if it began as a chip.

Common windscreen chip types and what they look like

If you can name what you see, you will get better advice faster. You also avoid that back and forth where you keep saying, “It is just a small chip,” and the repairer is trying to picture it.

Here are the common names, plus a few technician-style labels.

Surface chip and pit

A surface chip can feel like a tiny rough spot. A pit is even smaller. You might feel it with a fingernail.

Why it matters

Dirt sticks to it
The next impact can turn it into something bigger

People ignore pits for months. Then, a straight line crack appears after a hot day and a cold rinse. That is not rare.

Bullseye chip

A bulls eye looks like a circle with a darker centre. Often it comes from a direct stone hit.

Why it matters

Bullseye chips often repair well if you act early
Waiting can trap moisture, and the repair can look cloudy

If you do long-distance driving, a bullseye can turn into a combination break after one rough patch. I have seen that happen after weekend trips.

Extended ray on bullseye

Think of this as a bull’s-eye with a line starting to run out from it. That little line is the warning sign.

Why it matters

It shows movement in the glass
The repair window can be shorter

If the ray reaches the edge, replacement becomes more likely. The edge is a stress zone.

Star break and star burst

A star break has fine lines radiating from the impact point. People also say starburst when the rays look wider or more dramatic.

Why it matters

Star patterns spread with vibration and heat
Repairs can work, but timing matters

If you have a star break and you drive rough roads every day, do not wait for it to settle. It will not.

Half moon chip

A half moon looks like a curved bite mark.

Why it matters

It can be repairable
It can also hide a deeper fracture that later runs into a long crack

The shape helps the repairer understand what they are dealing with before they even see the car.

Angel wings

Angel wings often look like two curved flares coming off the centre. It is a split pattern that can throw light at night.

Why it matters

It can spread on both sides
It can create glare that feels bigger than the chip size

People often tell me, “It is small, but it is driving me mad at night.” I get it.

Combination break

This is a mix, like a bulls eye with star legs, or a half moon with extra fractures.

Why it matters

It behaves less predictably
Repair success depends on depth, dirt, and location

This is one where a trained assessment really matters.

Common windscreen crack types and what they mean

This is the stage where most people start worrying. Fair enough. A crack can keep travelling.

Length matters, but the bigger issue is where it sits, and what caused it.

Straight line crack and long crack

A straight line crack is a clean line. A long crack is any crack that has travelled.

Why it matters

Long cracks often remove the repair option
Daily driving can keep pushing it further

If you see it getting longer day to day, it usually will not stop by itself.

Edge crack and crack from the edge

Edge cracks start near the frame and move inward.

Why it matters

The edge carries stress from the car body
Repairs near the edge often fail or look poor

A small edge chip can sit there quietly. Then suddenly you get a long crack and you are stuck with replacement.

Stress crack

Stress cracks can appear without a visible stone hit. They can come from twisting forces or fitting pressure.

Why it matters

People assume it is random so they delay
It can spread fast with temperature changes

If your car has had recent body work, or you hit a pothole hard, stress cracks become more likely.

Floater crack

A floater crack starts in the middle, not from the edge.

Why it matters

You may miss it early
It can suddenly become obvious once it grows

Floaters can look worse in certain light. You spot it at sunset, then you cannot unsee it.

Quick match table
Use this to match what you see, then decide what to do next.

Damage type	What it looks like in real life	What it often leads to	Repair usually possible	What you should do next
Surface chip	A small rough spot on the surface. You might feel it with a fingernail	Can turn into a bigger chip after the next impact	Often yes, if it is shallow	Tape it. Book a check soon
Pit	A tiny crater. Looks like a dot, sometimes with a light sparkle	Can grow into a chip. Can create glare at night	Sometimes. Depends on depth	Do not pick at it. Book an assessment
Bulls eye chip	A round ring, like a small circle with a darker centre	Can stay stable, or turn into a mixed break if it gets knocked again	Often yes, if clean and early	Tape it. Try to book same day or next day
Extended ray on bulls eye	A bulls eye with a line starting to run out from it	Becomes a crack more easily	Sometimes. It depends how far the ray runs	Treat it as urgent. Book same day
Star break	A centre point with thin legs running out	Legs can run into a longer crack	Often yes if caught early	Tape it. Avoid rough roads if you can. Book soon
Star burst	Like a star break, but with more rays or wider looking spread	Higher chance of spread under vibration	Sometimes. Timing matters	Book quickly. Avoid car washes and pressure water
Half moon chip	A curved bite shape. Like a small crescent	Can hide deeper damage and later run into a crack	Often yes if not near the edge	Tape it and book. Mention the crescent shape
Angel wings	Two curved flares from the centre. Can throw glare at night	Can spread on both sides	Sometimes, depending on depth and position	Book quickly. Mention night glare if it bothers you
Combination break	A mix, like bulls eye plus star legs, or half moon with extra fractures	Unpredictable spread	Sometimes. Needs a proper look	Do not guess. Get a trained assessment
Straight line crack	A clean line. Short at first, then it starts moving	Often becomes a long crack	Rarely	Book an assessment. Replacement may be likely
Long crack	A line that has travelled across the glass	Keeps spreading with driving and temperature change	Usually no	Stop delaying. Arrange replacement advice
Edge crack	Starts near the frame, runs inward	Spreads faster because the edge carries stress	Usually no	Book fast. Edge cracks tend to worsen
Crack from the edge	Similar to edge crack, often starts from a small edge chip you missed	Expands into the main viewing area	Usually no	Get it checked quickly. Replacement often needed
Stress crack	A crack with no obvious stone impact. Often appears after twisting or pressure	Spreads with temperature change	Usually no	Book an inspection. Mention any pothole hit or recent work
Floater crack	A crack that starts in the middle, not from the edge	Can grow suddenly and catch light at sunset	Usually no	Do not wait. Book an assessment

Repair vs replace. The rules most people care about

You do not need to learn everything about glass. You just need a few clear rules so you know what the repairer is looking at.

A trained assessment still matters, but these guidelines help.

Size and depth

Smaller and shallower usually means better repair results.

Repair gets harder when

The chip is deep
The chip has multiple legs
The damage looks dirty and old

Depth matters because resin cannot bond properly if the break is contaminated.

Position on the glass

Location changes everything.

Higher risk areas include

The driver’s line of sight
Near the edge
Near sensors and camera zones on newer vehicles

Even if a repair is possible, a repair in your vision area can still leave a faint mark. Some drivers accept that. Some do not. It depends on you.

When replacement becomes the safer call

Replacement becomes more likely when

The crack is long
The crack reaches the edge
The damage sits where you rely on clear vision
Your vehicle has camera systems that need precise alignment

If your car has ADAS features, you may need camera recalibration after replacement. That is part of getting the safety systems working properly again.

What to expect after a repair

A repair aims to

Higher risk areas include

Stop the spread
Restore strength in the damaged area
Improve appearance

What is normal

You may still see a faint mark
You may see a small shadow in certain light

If someone promises an invisible repair every time, I would question that.

What you should do straight away

If you act early, you give the repair the best chance. You also stop the chip filling with grime.

The first 10 minutes checklist

Do this

Move off gravel and dust if you can
Lightly wipe around the chip, not the chip itself
Cover the chip with clear tape
Avoid blasting it with water
Book an assessment

Tape sounds basic. It really helps.

What not to do

Avoid these

Do not pour cold water on hot glass
Do not pick at it with a pin
Do not use DIY kits on breaks with legs or near edges
Do not aim a pressure washer at it

DIY kits can work for tiny pits. They can also lock in dirt and make professional repair harder.

When to book an inspection

Book same day if

The chip has legs
You see an extended ray line
It sits near the edge
It sits in your line of sight

Book within 24 to 48 hours if

It is a small pit
It is away from the edge and you can keep it clean and taped

If you drive between cities often, earlier is better.

South African driving realities that make chips worse

This part matters because your windscreen does not live in a bubble.

In Johannesburg and Pretoria traffic, you often sit behind trucks and bakkies. In Cape Town, coastal sand and bright glare make small marks feel bigger. Durban humidity can push moisture into a chip quickly. Gqeberha has that mix of highway driving and roadworks where stone spray is common.

Gravel roads, roadworks, and truck stone spray

These situations raise risk

Road resurfacing zones
Trucks carrying stone
Following too close at speed
Passing on gravel shoulders

What helps

Increase following distance
Avoid sitting behind vehicles with exposed loads

Heat, cold water, Durban humidity, Cape Town coastal conditions

Temperature swings matter.

Common triggers

Hot windscreen, cold wash
Air con blasting onto cold glass
Moisture sitting in a chip for days

Moisture is not just cosmetic. It affects repair bonding.

Long-distance driving between major centres

Long drives add vibration and constant wind pressure.

If you have a chip before a trip

Tape it
Book a repair before you go
Do not wait for after the trip

People often tell me they meant to fix it, but they needed the car. Repairs usually take less time than you think.

Book a windscreen assessment with MyGlass.co.za nationwide

If you can explain the damage, the call goes smoother, and you get better advice.

What to tell the glass repairer so you get the right advice fast

Our nationwide glass repairer network

MyGlass.co.za connects you with a nationwide network of windscreen repairers and replacement teams.

You can book help across South Africa, including

Johannesburg
Pretoria
Cape Town
Durban
Gqeberha and surrounding areas

If you are not sure if it is repairable, start with an assessment. That single step often saves time and stops the crack spreading.

Contact details and next step

Call and tell us what you can see on the glass and which city you are in. We will point you to the right repairer.

CALL US TODAY

FAQs

Can a chip be repaired in the driver’s line of sight?

Sometimes. It depends on the exact position and what mark will remain. Many drivers prefer replacement if the repaired spot still catches light.

How long does a windscreen chip repair take?

Often under an hour, including cure time, but it depends on the damage type and how busy the repairer is.

Will a chip spread if you keep driving?

It can. Heat, vibration, and moisture raise the risk. Star breaks and extended ray patterns often spread sooner.

Do windshield cracks always mean replacement?

Not always, but once the damage is a travelling line, replacement becomes more common. The longer it gets, the fewer options you have.

Can you go through a car wash with a fresh chip?

Avoid high pressure water directly on the chip. Keep it taped and book an assessment instead.

Does insurance usually cover windscreen chips and cracks in South Africa?

Many policies do, but cover depends on your insurer and your excess. Ask what your excess is and whether a repair changes your claim record.

Full article disclaimer
This article is for informational purposes only. It does not replace an in person assessment by a trained windscreen professional. Damage type, location, depth, and vehicle features can change whether glass can be repaired or must be replaced. For accurate advice, arrange a proper inspection through our nationwide glass repairer network at MyGlass.co.za or call 0861 694 527.

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