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Damage of up to 40mm across can sometimes be repaired, depending on where in the screen it is situated
Your car's windscreen is far more than just a piece of glass to keep the wind and rain out. A clean, clear windscreen is essential for good vision but a bonded windscreen is also an integral part of the vehicle body shell and contributes towards overall strength and stiffness.
It's important to use a reputable supplier for windscreen replacement but it's not always necessary to get the screen replaced as some damage can be safely repaired at little or no cost.
You can improve vision a lot, particularly when the sun is low in the sky, by making sure that the windscreen is clean on the inside and outside.
Even if you're not a smoker a hazy film will build up on the inside of the glass over time. Scratches, abrasions and chips on the outside can make dazzle from the sun worse too.
Wiper blades may last up to two years at the most but it's good practice to renew them once a year. New blades clear the screen more effectively and help reduce the dazzling effect of the sun.
Keep the screen-wash topped up using a good quality screen-wash additive to help clean the screen all year round as well as reduce freezing in cold weather. Check the handbook carefully to make sure that you fill the right reservoir though.
Some chips can be repaired
Depending on size and position a chip on your windscreen can be a distraction or even impair vision.
Damage of up to 40mm across can sometimes 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' - only damage up to 10mm can be repaired. This is slightly less than the size of a 5 pence coin.
Repair involves cleaning and drying the damaged area and filling it with a clear resin with similar optical properties to glass.
The damage won't completely disappear but the repaired area will be much less visible and will have a smooth surface so wipers aren't damaged.
If ignored, small chips can grow and become irreparable. Secondary cracks can 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 so it's important to act quickly.
Depending on where it is located, some windscreen damage will result in an MOT failure if not attended to. The screen is divided into two areas for the purposes of the MOT.
The 'A-zone' in front of the driver
Your car can fail the MOT if a wiper blade is insecure, missing, or in such a condition that it doesn't clear the windscreen effectively to give you an adequate view of the road (through the windscreen) to the left and right sides of the vehicle, as well as to the front.
Wipers that judder, make a noise, leave bands of rain or unwashed margins should be replaced.
(23 October 2012)
We can repair most small chips rather than replace the whole windscreen. These repairs would normally be free of charge, as your insurance company will often cover the costs. It shouldn't affect your no-claims bonus either.