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As a car owner, you may have heard of the term “windscreen delamination” but might not be entirely sure what it means or how it can affect your vehicle. In this article, we will explore what windscreen delamination is, its causes, and most importantly, how you can prevent it from happening.

What is Windscreen Delamination?

Windscreen delamination refers to the separation of the layers of a laminated windscreen. Most modern car windscreens are made up of two layers of glass with a layer of polyvinyl butyral (PVB) sandwiched in between. This laminated structure provides strength, safety, and helps prevent shattering in the event of an impact.

Delamination occurs when the PVB layer starts to degrade or separate from the glass layers, resulting in visible bubbles, hazy spots, or even cracks on the windscreen. It is important to address delamination promptly, as it can compromise the structural integrity of the windscreen and affect your safety on the road.

Causes of Windscreen Delamination

Several factors can contribute to windscreen delamination:

  1. Exposure to UV Rays: Prolonged exposure to sunlight and UV rays can cause the PVB layer to deteriorate over time, leading to delamination.
  2. Extreme Temperatures: Frequent exposure to extreme heat or cold can weaken the bond between the glass layers and the PVB, making the windscreen more susceptible to delamination.
  3. Chemical Damage: Certain chemicals, such as harsh cleaning agents or solvents, can react with the PVB layer and cause it to degrade.
  4. Physical Impact: A significant impact or collision can damage the windscreen, compromising the integrity of the PVB layer and leading to delamination.

Preventing Windscreen Delamination

While windscreen delamination can occur over time due to various factors, there are steps you can take to minimize the risk:

  1. Regular Cleaning and Maintenance: Clean your windscreen regularly using mild, non-abrasive cleaners. Avoid using harsh chemicals or solvents that can damage the PVB layer.
  2. Protective Windscreen Covers: Use a windscreen cover or park your vehicle in shaded areas to minimize exposure to direct sunlight and UV rays.
  3. Garage Parking: Whenever possible, park your car in a garage or covered parking area to shield it from extreme temperatures.
  4. Repair Chips and Cracks: Address any chips or cracks on your windscreen promptly to prevent further damage and potential delamination.
  5. Professional Inspection: Regularly have your windscreen inspected by a professional to identify any signs of delamination or other issues that may require attention.


Windscreen delamination can be a concerning issue for car owners, but by understanding its causes and taking preventive measures, you can minimize the risk of it happening to your vehicle. Regular maintenance, protection from UV rays and extreme temperatures, and prompt repairs are key to keeping your windscreen in optimal condition and ensuring your safety on the road.

Remember, if you notice any signs of windscreen delamination, it is crucial to consult a professional windscreen repair or replacement service to address the issue promptly and prevent further damage.