Can Your Windscreen Chip Be Repaired?

The Good News: Most Chips Can Be Repaired

The majority of windscreen chips can be successfully repaired using professional resin injection techniques — and in most cases the result is virtually invisible. Furthermore, a repair costs a fraction of a full replacement and takes under 30 minutes. Consequently, the first question to ask is not whether you need a new windscreen, but whether your chip meets the criteria for repair.

However, there are specific conditions under which a chip cannot be repaired safely. Understanding these criteria helps you make an informed decision and ensures you get the right advice from your technician.

The Five Key Criteria for Repairability

1. Size — Smaller Than a 50p Coin

As a general rule, chips smaller than a 50p coin in diameter (approximately 25mm) can be repaired. Furthermore, this applies to the total spread of damage including any cracks radiating from the impact point. Larger chips may have compromised too much of the glass structure to be safely repaired, and a replacement would therefore be recommended instead.

2. Location — Not in the Driver’s Direct Line of Sight

Chips in Zone A — the 290mm band directly in front of the driver — can sometimes be repaired, but the rules are stricter here. Moreover, even after a successful repair in this area, some minor optical distortion can remain. If the chip is directly in the area you look through while driving, your technician will assess whether a repair would leave acceptable clarity or whether a replacement is the safer option.

3. Depth — Not Through Both Layers

Windscreens are made from laminated glass — two layers of glass bonded together with a plastic interlayer. A chip that has penetrated only the outer layer can almost always be repaired. However, if the damage has gone through both layers of glass to the interlayer, repair is no longer possible and replacement is necessary. This type of deep damage is less common but can occur with high-energy impacts.

4. Cracks — Fewer Than Three Legs

Many chips have cracks radiating outward from the impact point — these are sometimes called legs or tails. As a general guideline, chips with up to three legs can typically be repaired, provided each leg is not too long. Furthermore, the resin can be injected along each crack to seal it. However, chips with many long cracks spreading in multiple directions may be beyond repair.

5. Edge Position — Not at the Rim of the Glass

Chips close to the edge of the windscreen are more difficult to repair and may not be suitable. This is because the edge of the glass is where the windscreen seal sits — damage here can compromise the integrity of the seal itself. Moreover, edge chips are more likely to develop into long cracks that run across the screen. Consequently, edge damage is more likely to require a full replacement.

What Happens During the Assessment?

When our technician arrives, they will inspect the chip closely in good lighting before beginning any work. They will check all five criteria above and give you an honest assessment. In addition, they will advise you on the likely outcome of the repair — including how visible the repaired area is likely to be and whether it would affect your MOT.

We will never attempt a repair that we do not believe will produce a good result, and we will never recommend a replacement if a repair is genuinely achievable.

What If It Cannot Be Repaired?

If the damage is beyond repair, a full windscreen replacement will be required. This is a more involved process — typically taking 1–2 hours — but our mobile service means we still come to you and complete the replacement at your home or workplace. Furthermore, we use only OEM-standard glass so the quality of the replacement is equivalent to the glass originally fitted to your vehicle.

Act Quickly — Chips Spread Fast

One of the most important things to know about windscreen chips is that they rarely stay the same size. Temperature changes — particularly the freeze-thaw cycle that happens on British winter mornings — can cause a chip to spread into a crack seemingly overnight. Moreover, road vibrations and the pressure of wiper blades can accelerate this process further.

Therefore, if you have a chip that meets the repair criteria, book it in as soon as possible. The longer you leave it, the greater the risk that it spreads beyond repair. In most cases we can attend the same day or the following morning across Hertfordshire and Bedfordshire.