A windscreen chip can be repaired if you act quickly, but the method depends on the chip's size, location, and depth

A chip in your windscreen is not the same as a crack. A chip is a small area where glass has broken away, usually from road debris or impact. If the chip is smaller than a quarter and not in your direct line of sight, many glass repair shops can fill it with a special resin that hardens and restores structural strength. The repair takes 30 minutes to an hour and costs between £50 and £150, depending on your location and the chip's exact position.

The longer you wait, the more likely the chip will spread into a crack that cannot be repaired — only replaced. Temperature changes, road vibration, and pressure from closing the door can all cause a small chip to grow. If the chip is already showing signs of branching cracks, or if it is larger than a quarter, or if it sits directly in your line of sight as the driver, repair is usually not possible and you will need a full windscreen replacement instead.

Key Takeaways

  • Chips smaller than a quarter and away from the driver's line of sight can usually be repaired with resin filler within a few hours of the damage.
  • The repair cost is typically £50 to £150 and takes about an hour, while a full replacement costs £200 to £500 or more depending on your vehicle.
  • Chips that have started to crack, or chips larger than a quarter, or chips in the driver's direct sightline cannot be repaired and require windscreen replacement.
  • Many motor insurance policies cover windscreen repair or replacement with little or no excess, so check your policy before paying out of pocket.

When a chip can and cannot be repaired

Glass repair shops use a straightforward rule: if the chip is smaller than a 10p coin and has not yet cracked outward, it can be repaired. The resin filler bonds to the glass and hardens under ultraviolet light, filling the void and preventing moisture and dirt from entering the damaged area. This stops the chip from spreading and restores most of the windscreen's original strength.

Chips cannot be repaired if they are in the driver's direct line of sight — the area you look through when driving straight ahead. Even a filled chip will leave a slight discoloration or distortion, and the law requires your windscreen to be clear in that zone. Chips in the passenger area or lower corners can often be repaired because they do not affect your view of the road.

If the chip has already developed cracks radiating outward, or if it is deeper than the thickness of a coin, the glass is too weakened to repair. In these cases, the entire windscreen must be replaced. A replacement windscreen is removed, the frame is cleaned, and a new pane is fitted with adhesive sealant. This takes two to three hours and requires the vehicle to sit undisturbed for 24 hours while the sealant cures.

How to find a glass repair shop and what to expect

Most towns and cities have dedicated windscreen repair shops, and many car dealerships also offer the service. You can search online for "windscreen repair near me" or ask your motor insurance provider for a list of approved repairers — many insurers have partnerships with specific shops and may cover the cost entirely if you use one of them.

When you contact a shop, describe the chip's size, location, and whether it has cracked. Many shops will ask you to send a photo so they can assess whether repair is possible before you visit. If the chip is repairable, the shop will schedule you for a time slot — often the same day if you call early. Bring your vehicle keys and proof of insurance, though you will not need to provide a claim reference unless your insurer is paying directly.

During the repair, the technician will clean the chip thoroughly, inject resin into the void, smooth the surface level with the surrounding glass, and cure it under ultraviolet light. You can usually drive the vehicle when ready after, though some shops recommend waiting an hour before washing the windscreen or driving in heavy rain. The repair is permanent and should last the life of the windscreen.

Insurance coverage and when to claim

Most comprehensive motor insurance policies include windscreen cover, either as standard or as an optional add-on. Some policies cover repair at no cost, while others charge a small excess (typically £0 to £75). A few policies cover replacement only, not repair. Check your policy documents or call your insurer to find out what you are covered for and what excess applies.

If your policy covers the repair, contact your insurer before visiting a shop. They will either give you a claim reference to take to an approved repairer, or they will arrange for a mobile technician to come to your home or workplace. Mobile repair services are common and mean you do not have to travel. The technician brings all equipment and completes the repair in your driveway.

If you pay for the repair yourself, keep the receipt. Some insurers will reimburse you if you claim later, though you will need to provide proof of the repair and the cost. It is usually faster and simpler to claim before the repair rather than after.

Preventing chips from spreading while you wait for repair

If you cannot get a repair appointment when ready, take steps to prevent the chip from growing. Avoid driving on motorways or rough roads where vibration and pressure changes can cause the chip to crack. Park in a garage or under cover rather than in direct sunlight, because temperature swings can stress the glass. Do not slam doors or close windows forcefully near the damaged area.

Some people explore clear nail polish or a temporary windscreen repair kit (available from car accessory shops) to seal the chip and keep out moisture. These are not permanent solutions and will not restore the windscreen's strength, but they can slow the spread of damage if you are waiting for a professional repair. Remove any temporary seal before the technician arrives, as they will need to clean the chip thoroughly.

The difference between repair and replacement costs

A windscreen chip repair costs £50 to £150 depending on the shop's location and the chip's exact position. A full windscreen replacement costs £200 to £500 for a standard vehicle, and more for luxury or specialist cars. If your insurance covers the repair at no excess, the cost to you is zero. If you have an excess, you pay that amount and the insurer pays the rest.

If the chip cannot be repaired and you need a replacement, the cost difference is significant. However, many insurers cover replacement with the same excess as repair, so the out-of-pocket cost may be the same. If you are uninsured or your policy does not cover windscreen damage, paying for a repair now is much cheaper than paying for a replacement later.

What happens if you ignore a windscreen chip

A chip left untreated will almost certainly spread into a crack within weeks or months. The crack will grow every time the windscreen experiences pressure — from closing the door, from temperature changes, or from driving over bumps. Once a crack forms, repair is no longer possible and you must replace the entire windscreen.

A cracked windscreen is also a safety issue. The windscreen is part of the vehicle's structural integrity and helps support the roof in a rollover. A compromised windscreen reduces this protection. Additionally, a crack in your line of sight is illegal to drive with in most places, and you can be stopped by police and fined. Repairing a chip early is the cheapest and safest option.

Frequently Asked Questions

Can I drive with a windscreen chip?

Yes, a chip alone is not illegal and does not make the vehicle unsafe to drive. However, you should have it repaired as soon as possible because chips spread into cracks quickly. If the chip is in your direct line of sight, it is better to avoid driving until it is repaired, as it may distract you or reduce your visibility.

How long does a windscreen repair last?

A professional resin repair is permanent and should last the life of the windscreen — typically 10 to 15 years. The resin bonds chemically to the glass and does not degrade over time. Temporary repairs using nail polish or DIY kits are not permanent and may only last weeks or months.

Will my insurance premium go up if I claim for windscreen repair?

Most insurers do not increase your premium for a windscreen claim, as glass damage is usually not considered your fault. However, check your policy or ask your insurer directly, as some policies have different rules. A claim will still appear on your claims history if you switch insurers.

What if the chip is on the side window, not the windscreen?

Side windows can also be repaired if the chip is small enough, though the process is similar to windscreen repair. However, side windows are not part of the vehicle's structural integrity, so a chip is less urgent. Many insurance policies cover side window repair, but some do not — check your policy to be sure.

Can I repair a chip myself with a DIY kit?

DIY windscreen repair kits are available from car accessory shops and online retailers, typically costing £10 to £30. These kits use a resin similar to what professional shops use, but the results are usually less durable and less cosmetically pleasing. A professional repair is recommended if the chip is in a visible area or if you want the repair to last.