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The reasons for Black Dots on Windscreen

Black Dots on Windscreen

If you drive a car, you probably see these little black dots on the windscreen every day. They seem to be on practically all modern cars, which makes them remarkable. There are variations, of course, but the most common ones are often rounded, while others tend to be more edgy. But no matter what they look like, these intriguing black dots seem so unappreciated that no one even thinks to ask what their original purpose was.

You may wonder: What are these black dots on windscreen? Don’t worry, they’re there for your own safety. Read on to find out everything you need to know about those black spots on your windscreen.

Black Dots on windscreen, what are they?

The windscreen of a car is certainly one of the most important components in maintaining the stability of the vehicle and ensuring the safety of the driver and passengers in the case of an accident. If there is any type of damage to the structure, such as a crack, the passengers can be put at risk.

The black dots on windscreen are called frits. Many of them are rounded, but some are more angular or striped. Each frit is painted with black enamel, which is burnt into the glass around the edges of a windscreen during production. The area of the windscreen closest to the car frame is usually solid black, and as you move towards the center, the black gradually diffuses from larger to smaller dots until the windscreen – and possibly other windows in the car – become clear glass.

Black Dots on windscreen, what are they?

There are at least four reasons that explain why they are called frits in the first place:

  1. To reduce the visual distortion of the windscreen known as lensing, which occurs when the solid black strip heats up considerably faster than the windscreen glass, causing an optical distortion of straight lines that appear to be curved or bent inwards towards the center, a “dot matrix” or “halftone” pattern is created. By dissipating and evenly distributing heat, these “gradually sinking” black dots help to reduce this phenomenon.
  2. These black dots on windscreen act as a contact point between the glass and the vehicle frame, leaving ‘etchings’ on the surface. The rougher surface allows the adhesive to adhere more securely to the glass. When replacing or repairing a windscreen, a technician uses the frit as a junction between the glass and the frame.
  3. Because the black enamel on the outside of the windscreen is used to prevent the sun’s UV radiation from melting the glue under the tape that holds the windows in position, it helps to maintain the urethane sealant used to bond the glass to the vehicle frame. This sealant is designed to last. Over time, prolonged exposure to direct sunlight can erode or reduce adhesion.
  4. The difference between the dark line and the clear glass can be too obvious, even from a distance, so a “dot matrix” or “halftone” pattern provides a gradual reduction in size, which makes the transition much more subtle and easier on the eye.

What are third-visor frits?

A dot matrix pattern known as a third visor frit, commonly found on the windscreen behind the rear-view mirror, is a feature of many modern vehicles. It acts as a sun visor to block glare from the windscreen, which can obscure the rear-view mirror.

What you should do if the black dots on windscreen have worn off?

Acknowledge that black dots are a necessary component of your car’s windscreen. If you ignore them, it could lead to serious problems later on the road. That’s because the frits keep the windscreen’s bond with the car intact, otherwise the windscreen would not stick to the car effectively.

When is it time to replace a windshield?

If the black dots on windscreen are missing, you may not need to replace the whole windscreen. You will almost always need to replace your windscreen if it is cracked.

Minor cracks can usually be repaired without replacing the entire window by windscreen services London. However, you’ll need to have your windscreen replaced if the crack reduces your field of vision, is significant in size or extends to the edge of the glass.

If the black dots are worn away, you may not need to replace the entire windscreen. You will almost always need to replace your windscreen if it is cracked.

Minor cracks can usually be repaired without replacing the entire window. However, you’ll need to have your windscreen replaced if the crack reduces your field of vision, is significant in size or extends to the edge of the glass.

It’s not a good idea to ignore a crack in your windscreen; if you don’t repair it immediately, it could be fatal. Be aware that cracks in the windscreen are likely to grow and spread. If you need a replacement windscreen, make sure you go to a professional. A specialist will first assess the condition of your windscreen and act accordingly.

When is it time to replace a windshield?

Can you remove the black dots on windscreen?

Black dots on windscreen are a vital component that shouldn’t be altered or repaired. Without the frit, your windscreen wouldn’t attach properly to your car. The frit keeps your windscreen attached to your car.

Can you remove the black dots on windscreen?

Conclusion

So next time you find yourself staring at those black dots on your windscreen in your driveway, think about what goes into making your windscreen. From the bending process to hiding unsightly adhesives, there is more to that little black frit than you may have realized.

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