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NATIONAL AUTO GLASS and CHIP REPAIRS At NATIONAL AUTO GLASS we have assured the Insurance companies we are associated with that we will “Repair before Replacing”. The industry target is 15% of interventions associated with windscreen replacement must result in a repair rather than a replacement. Not only does this attitude save the Insurance company money it also saves the customer money as well. Is it safe to repair a windscreen? Absolutely, a quality windscreen repair by a trained NATIONAL AUTO GLASS technician will restore the structural integrity of the windshield to that of a new windscreen, help prevent the damage from spreading, and make the blemish much less noticeable, without having to remove and replace the windscreen. Where will we repair a chip and where not? As a general rule NATIONAL AUTO GLASS would prefer not repair a chip that is in the Critical Vision Area, preferring to recommend to the customer that he or she rather replace the windscreen CVA = Critical Vision Area PVA = Primary Vision Area Types of damage Maximum Chip or Crack repair size Types of damage Within CVA Within PVA Crack 25mm 100mm Star 15mm 30mm Horseshoe 10mm 25mm Bullseye 10mm 20mm Crater 2mm 5mm Combination As above for each type of damage. If the windscreen chip exceeds the sizes above NATIONAL AUTO GLASS would prefer to replace the windscreen. Why should the customer repair the windscreen rather than replace. 1. A chip can turn into a crack at any time and compromise the strength of your windscreen. The windscreen provides a large part, up to 40%, of the structural strength of the modern motor car, also the passenger airbag is dependent on the support it receives from the windscreen to ensure it deploys correctly to protect the passenger from serious injury in the event of an accident. Driving over a speed bump, pothole or other uneven terrain can cause a chip to propagate into a crack. The force radiates through the car and puts additional stress on the edges of the chip, which can quickly lead to a crack appearing. Although it is not possible to suggest how long it will take for a chip to spread, a study suggests that factors like weather changes from hot to cold and vice versa and simple driving will eventually cause or lengthen a windshield crack. By repairing a chip as soon as possible you can prevent the chip turning into a crack which would compromise the strength of the windscreen and probably result in the need to replace the windscreen. Other facts about cracking from chips: Cold weather stress In cold weather conditions, windshields will develop a more concave shape. As a result, windshield chips are more likely to spread as cracks in a horizontal direction. Warm weather stress Warm weather conditions cause windscreen chips to spread mostly vertically. The excessive heat itself distorts the shape of the windshield glass, which can lead to cracking by itself ie without any appearance of a chip. However, the cooling effect of the air conditioning unit is likely to set off a crack from a chip. 2. It is a QUICK fix. A Chip Repair takes about 30 minutes from start to drive away. And a repair can be done almost anywhere. The only condition being that the windscreen must not be wet when the repair is carried out. 3. It is a CHEAP fix. Most Insurance companies will pick up the FULL COST of the Chip Repair and your No Claim Bonus will NOT be impacted. So there is no excess to be paid. Obviously this only applies to vehicles that are comprehensively insured or vehicles having insurance cover for glass damage. 4. It is EASY to do. The National Auto Glass Dealer simply gets your Insurance details and gets authorisation from your Insurance Company. He handles all the paperwork on your behalf with your Insurance Company. Insurance company guidelines: 1. The NATIONAL AUTO GLASS Dealer undertakes to where possible to firstly repair the windscreens before replacing the windscreen. 2. The NATIONAL AUTO GLASS Dealer must use his discretion to ensure the safety of the insured at all times when advising the customer on whether to repair or replace the windscreen. 3. The Chip Repairs must meet the following requirements: a. Chips and cracks may not be in the Critical Vision Area as indicated above and may not endanger the safety of the insured, upon which the windscreen may be replaced. b. There must be good optical vision and little visible distortion after the repair. c. A maximum of three chips per windscreen may be repaired, after which it may be replaced. d. The maximum length of a crack (from side to side) that can be repaired is 100 mm, where after the windscreen may be replaced.
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