It is a silicon dioxide (SiO₂) based product designed for car windows. It creates a hydrophobic “beading” effect – water does not spread into a film but forms droplets and quickly runs off the glass, especially at higher speeds. Because of this effect, the coating is sometimes referred to as “invisible wipers.”
It effectively performs the following functions:
- repels water;
- reduces dirt adhesion to the glass;
- improves visibility during rain;
- makes bug residue easier to remove;
- in winter, ice adheres less strongly
Glass coating is specifically designed for glass. It is formulated to bond with the surface and ensure a strong hydrophobic effect.
How to Prepare the Glass Before Application?
Usually, it is enough to use:
- a quality glass cleaner;
- a clean microfiber cloth
The most important thing is that the glass is completely clean and free of grease residues.
If you notice water spots, limescale, or other deposits, it is recommended to:
- polish the glass (manually or by machine, using a paste intended for glass or paintwork);
- after polishing, degrease the surface with isopropyl alcohol (IPA).
Ceramic coating bonds properly and lasts longer only on clean and degreased glass.
Is It Effective?
In most cases – yes. When driving in the rain, water that lands on the windshield turns into small droplets and, at higher speeds, rolls upward. This improves visibility and reduces the need to use the wipers frequently.
The effect is most noticeable when driving on highways or at higher speeds. In city traffic, at lower speeds, the hydrophobic effect will be weaker, so wipers will still be necessary.
How Long Does It Last?
Durability depends on:
- the quality of the chosen product;
- glass preparation;
- vipers usage intensity;
- the condition of the wiper blades.
On average, glass ceramic coating can last from several months up to a year or even longer. On the windshield it lasts less longer because of vipers. Side windows it last much longer.
Summary
Glass ceramic coating is a practical upgrade that genuinely improves visibility in rainy conditions and makes glass maintenance easier.
Proper surface preparation and good quality products are the key factors that determine a good result.