Claimed Benefits:

• Hydrophobic Surface: The coating may create a water-repellent surface, causing rainwater to bead up and roll off more easily. This can make windows easier to clean and potentially reduce water spotting.
• Dirt Repellency: Similar to water, the coating might also make the window surface more resistant to dirt and grime buildup, potentially reducing cleaning frequency.
• Scratch Resistance: Some formulations might offer a slight improvement in scratch resistance, but significant scratch protection is unlikely.

Technology Behind It:

• Liquid nano glass coatings typically involve a silicon-based solution applied to the window surface.
• At a microscopic level, the solution fills in tiny imperfections on the glass, creating a smoother surface.
• This smoother surface is what contributes to the water and dirt repellency properties.

Limitations to Consider:

• Durability: The effectiveness of these coatings can diminish over time, especially with exposure to harsh elements. Reapplication may be required periodically.
• Limited Protection: While some scratch resistance might be present, it’s unlikely to be significant against heavy impacts or sharp objects.
• Focus on Cleanliness: The primary benefit seems to be related to easier cleaning and maintaining a clear window surface. Energy efficiency improvements are not typically a major focus.