DFI Glass Protector

"DFI truly sets the standard
when it comes to windscreen.
protective coatings
nothing else comes close"


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More Details

National UK Network


Thermal Blade

Advanced Perfomance
Wiper Technologiy

THERMALBLADE products deliver an upgrade in wiper performance to help you see better in all weather.

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Thermal Blade Website

Commercial Services

Windscreen Repair Services

Glass Assist UK Windscreen Repair Services are a leading UK car and other vehicle windscreen repair, stone chips and windscreen crack repair company.

Windscreen Repair Services
Depending on size and position a chip on your windscreen can be a distraction and in some situations can impair vision too.

A chip doesn't always mean replacing the whole windscreen though – damage of up to 40mm can be repaired, depending on where in the screen it is situated. If the damage is right in front of the driver in the area known as the "A zone" (see diagram below) only damage up to 10mm can be repaired. This is slightly less than the size of a 5 pence coin.

Repair basically involves cleaning and drying the damaged area and filling it with a clear resin with almost identical optical properties to glass. The damage won't completely disappear but the repaired area will be smooth and structurally sound – reducing the risk of damage to the wipers – and much less visible.

If left unattended, small chips can grow and become un-repairable as secondary cracks form under the combined effect of heat, moisture, frost, dirt and vibration. Any dirt or moisture entering the chip will make it more difficult to produce a visually acceptable repair.

Stone chips on the windscreen and the MOT

Some windscreen damage can result in an MOT failure – another good reason to get damage repaired promptly.

For the purposes of the MOT test the windscreen is divided into two different zones


  • Immediately In front of the driver (The "A-zone" – a 290mm wide band centered on the steering column and bounded top and bottom by the wiper swept area) – damage larger than 10mm across will normally result in a failure.
  • Elsewhere on the windscreen – damage larger than 40mm across will normally result in failure.

Glass Assist Windscreen Repair Services
Contact Glass Assist now on 0800 1958 628 for a prompt windscreen repair and replacement service anywhere in the UK.