How is it done?
Glass windows can accumulate various types of stains over time, from lime deposits to grease and grime. Understanding why these stains form and how to effectively remove them is crucial for maintaining the clarity and beauty of your windows. In this blog post, we’ll explore the common types of stains found on glass windows and provide practical solutions for removing them. We’ll also highlight how Skypole, a Toronto-based window cleaning company, uses scrub pads to tackle these stains, with before and after pictures to showcase the results.
Types of Stains on Glass Windows
- Lime and Mineral Deposits
- Why They Form: Lime and mineral deposits are common in areas with hard water. When water evaporates, it leaves behind minerals that can etch into the glass over time, creating a hazy appearance.
- Removal Method: Mix equal parts of white vinegar and water in a spray bottle. Spray the solution onto the stained area and let it sit for a few minutes. Scrub with a soft brush or scrub pad, then rinse with clean water and dry with a microfiber cloth.
- Grease and Oil Stains
- Why They Form: These stains often occur near kitchens or in urban areas with high levels of airborne pollutants. Grease and oil can adhere to the glass, making them difficult to remove with regular cleaning methods.
- Removal Method: Use warm water mixed with a few drops of dish soap. Apply the solution to the stained area and scrub with a scrub pad. Rinse thoroughly with clean water and dry with a microfiber cloth.
- Paint Splatters and Residue
- Why They Form: Paint splatters can occur during home improvement projects. Once dried, they can be challenging to remove without damaging the glass.
- Removal Method: For dried paint, use a razor blade scraper at a 45-degree angle to gently scrape off the paint. For wet paint, use a cloth dipped in paint thinner or turpentine to wipe away the stain.
- Mould and Mildew
- Why They Form: Mould and mildew thrive in damp environments and can develop on window frames and sills, eventually spreading to the glass.
- Removal Method: Mix equal parts of water and hydrogen peroxide in a spray bottle. Spray the solution onto the affected area and let it sit for a few minutes. Scrub with a scrub pad, rinse with clean water, and dry with a microfiber cloth.
Skypole’s Approach to Stain Removal
Skypole, a Toronto-based window cleaning company, uses specialized scrub pads to effectively remove various types of stains from glass windows. These scrub pads are designed to tackle tough stains without scratching the glass surface. Below are some before and after pictures showcasing the effectiveness of their cleaning methods.


!Before Cleaning Before cleaning: Notice the heavy lime deposits and grime on the glass.
!After Cleaning After cleaning: The glass is clear and free of stains, thanks to Skypole’s scrub pads.
Conclusion
Maintaining clean and clear glass windows requires understanding the types of stains that can form and using the right methods to remove them. Whether it’s lime deposits, grease, paint splatters, or mould, the solutions provided in this post will help you keep your windows sparkling. Skypole’s use of scrub pads effectively tackles tough stains, ensuring your windows remain pristine.






