Headlight crazing is the degradation of the UV protective coating which not only affects the surface of the lens but also under the polycarbonate UV protective hard coat. Headlamp crazing has a micro-cracking or a spider web-looking effect. Fortunately, Headlight Restore can repair this issue if caught early.
What Causes Headlight Crazing or Micro Cracks?
Crazed or micro cracks in headlights occurs primarily due to the degradation of the polycarbonate material and factory UV protective hard coat used in modern headlight lenses. Several factors contribute to this deterioration:
- UV Exposure
Polycarbonate is strong and lightweight, but prolonged exposure to UV radiation from the sun causes it to break down over time degrading the factory UV coat and lens. This results in microscopic cracks that form the characteristic crazing pattern.
- Chemical Reactions
Certain chemicals found in car cleaning agents, road salts, and even fuel vapors can interact with the headlight’s protective coating. This weakens the plastic, making it more susceptible to cracking.
- Temperature Fluctuations
Repeated cycles of heating and cooling cause expansion and contraction of the headlight material. Over time, this stress leads to crazing. In cases Where the UV protective coating staers to degrade under the above conditions, it may start to shrink and cause the polycarbonate lens to split.
- Physical Stress and Abrasion
Road debris, minor impacts, and improper cleaning techniques (such as using rough cloths or aggressive compounds) can wear down the protective coating and expose the underlying polycarbonate to further damage. Also, buffing headlights with a buff as car detailers and mechanics may do can cause too much heat causing friction splintering the polycarbonate lens.
Is Headlight Crazing Repairable?
If headlight crazing is noticed in early stages Headlight Restore can potentially repair them to as-new. Headlamp crazing unattended will become deeper over time and becomes harder to remove. Modern headlights are expensive and require the front bumper bar to be removed to replace. This is why Headlights should be repaired by a professional before they become unroadworthy and irreparable.
How to fix crazed or micro cracks on headlights:
Headlight crazing is a common yet frustrating issue that affects vehicle owners mostly in high UV environments like Australia. Particularly high-end models like the Porsche. BMW, VW but not limited to other vehicle brands like Hyundai’s and Kia‘s having similar issues. If you’ve noticed a web of tiny cracks forming on your headlight lenses, you’re likely dealing with crazing. This issue affecting headlights not only affects the appearance of your vehicle but can also reduce visibility and can end up being costly if not repaired before damage is irreparable. Headlight Restore can repair crazed headlights to as-new and prevent further damage, saving you potentially thousands on new replacement headlamps.
How to Prevent Hairline Cracks in Headlights?
While crazing may seem inevitable, there are several steps you can take to slow down or even prevent the process:
- Repair and replace the UV-Protective Coating When issue begins
To prevent further damage, Headlight Restore can remove the affected UV protective coating and professionally spray on a new UV protective hard coat.
- Use Gentle Cleaning Products
Avoid harsh chemicals and abrasive cleaning tools when washing your headlights. Stick to mild soaps and microfiber cloths to prevent unnecessary wear on the protective layer.
- Park in the Shade or Use a Car Cover
Minimizing direct sun exposure can significantly extend the life of your headlights. If you don’t have access to covered parking, consider using a reflective car cover.
- Regularly Inspect and Maintain Your Headlights
Checking your headlights periodically for early signs of wear allows you to take corrective action before crazing worsens. If you notice the protective coating degrading, reapply UV protective hard coat or seek a professional restoration service like Headlight Restore and have a professional sprayed UV protective cured hard coat applied.