Can a windscreen crack be repaired?

A crack means the break has already run. Heat, cold and the body flexing over bumps can make it grow. Hosing a hot car can do it. In Queensland, a crack over 150mm in the driver's half of the wiper area fails inspection if it goes through more than one layer of glass or gets in the driver's way.

What kind of repair does it need?

Usually a new windscreen. The old one is cut out and a new one is bonded in. If your car has a camera behind the glass for lane keeping or auto braking, most manufacturers call for it to be recalibrated. Some repairers can fix cracks up to 30cm. Ask before you replace.

Class of work The screen cut out and a new one bonded in.

Includes recalibrating any camera mounted behind the glass. This is glass work, not paint work.

What to do next

Call an auto glass specialist. Ask two things: is the glass original brand or aftermarket, and is camera recalibration included. Check your policy. Glass cover is often an optional extra, and some policies cover the first glass claim with no excess. A crack in front of the driver is the one to deal with first.

Sources

  1. Queensland Light Vehicle Inspection Manual (TMR)governmentcracks more than 150mm long which either penetrate more than one (1) layer of the glass in a laminated windscreen or interfere with the driver’s vision
  2. AAMIinsurerAvailable as an Optional Cover
  3. NOVUS Glass Australiaglass repairerrepair windscreen cracks up to 30cm in length
  4. O'Brien AutoGlassglass repairerAfter a windscreen replacement, most vehicle manufacturers recommend a camera recalibration to maintain the integrity of your vehicle’s Advanced Driver Assistance Systems (ADAS).
  5. North West Windscreensglass repairerUnlike full windscreen replacements, which often need time for the adhesive to cure…
  6. Safeliteglass repairerPouring cold water on hot glass puts the same kind of rapid thermal stress on the windshield as cold rain on a sun-baked surface.

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Related

Can a windscreen chip be repaired? A small chip away from the edge can often be filled with resin, even in front of the driver if it is small enough. Learn the limits. When does a windscreen chip need replacing? A chip that is too big overall, too big for the driver's area, or too near the edge needs a new screen. Learn about camera recalibration. What causes stains on car glass? Haze on glass that wipers smear is mineral deposits and road film. Learn how decontamination fixes it without replacing the screen. What causes scratches on car glass? Scratches on glass come from wipers, grit, or automatic washes. Learn about glass polishing and when the screen is replaced.
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