How to Clean Glass Windows Inside and Out

Cleaning your windows can make a significant difference in the overall appearance of your home, letting in more natural light and offering clearer views. Whether you're tackling dirty windows inside, outside, or even cleaning exterior windows from inside, this guide will walk you through the best methods to achieve spotless, streak-free glass.

1. Preparation for Cleaning Windows

Before you begin cleaning your windows, it’s important to gather the right tools and choose the best time for the task.

• Gathering the Right Supplies: For an effective window cleaning, you’ll need the following items:

  • A bucket
  • Microfiber cloths or lint-free towels
  • A squeegee
  • A soft brush or sponge
  • A vacuum cleaner with a brush attachment
  • Cleaning solution (either DIY or commercial)

• Checking for Dust and Debris: Dust and dirt can scratch glass if not removed before cleaning. Start by dusting the window frames, sills, and tracks. Use a vacuum cleaner to suck up any loose dirt from the tracks and corners. This step is crucial for achieving a streak-free finish.

• Choosing the Best Time: The ideal time to clean windows is on a cloudy day or when the windows are shaded. Direct sunlight can cause the cleaning solution to dry too quickly, leading to streaks.

2. How to Clean Windows from the Inside

Cleaning windows from the inside is usually easier and safer, but it still requires proper technique to avoid streaks and smudges.

• Step 1: Dust and Vacuum Around the Window

  • Dusting Window Frames and Sills: Use a soft brush or microfiber cloth to dust the frames, sills, and any other areas around the window. Removing this dust first prevents it from mixing with your cleaning solution and creating a muddy mess.
  • Vacuuming Tracks and Crevices: Use a vacuum cleaner with a brush attachment to clean the window tracks and corners. This will remove any dirt or debris that could interfere with a smooth cleaning process.

• Step 2: Apply Cleaning Solution

  • DIY Cleaning Solutions: A simple and effective homemade solution is a mixture of equal parts water and white vinegar. Another option is a few drops of dish soap mixed with water. These solutions are both effective and safe for most types of glass.
  • Commercial Glass Cleaners: If you prefer, you can use a commercial glass cleaner designed to leave a streak-free finish. Spray the cleaner directly onto the glass or onto your cloth, depending on the product’s instructions.

• Step 3: Wipe and Squeegee

  • Using a Microfiber Cloth: Wipe the window in a circular motion with a microfiber cloth to spread the cleaning solution evenly across the glass. Microfiber is ideal because it’s gentle on glass and doesn’t leave lint behind.
  • Proper Squeegee Technique: Hold the squeegee at an angle and start at the top of the window, pulling it down in a straight line. Wipe the blade with a clean cloth after each stroke to prevent streaks. Continue this process until the entire window is clean.

• Step 4: Drying and Buffing

  • Drying the Edges: Use a dry microfiber cloth to wipe around the edges of the window and any spots where water might have pooled. This step helps prevent water spots and streaks.
  • Buffing with a Dry Cloth: For a final shine, buff the glass with a dry microfiber cloth or a crumpled piece of newspaper. This will remove any remaining moisture and leave the glass gleaming.

3. How to Clean Outside Windows from Inside

Cleaning outside windows from inside your home can be challenging, especially for windows that don’t fully open or for second-story windows. However, with the right tools and techniques, it’s possible to get those exterior windows just as clean as the interior ones.

• Tools You Need

  • Extension Poles: Use an extension pole with a squeegee and brush attachment to reach high or difficult-to-access exterior windows from inside.
  • Magnetic Window Cleaners: These innovative tools allow you to clean both sides of the window at once. They consist of two cleaning pads that are connected by a powerful magnet—one pad is placed on the inside of the window, and the other on the outside.

• Step-by-Step Process

  • Removing Screens: If your windows have screens, remove them carefully before cleaning. Screens can usually be cleaned separately with a hose and a soft brush.
  • Using a Squeegee and Extension Pole: Apply your cleaning solution to the exterior window using a sponge or brush attached to an extension pole. Use the squeegee attachment to remove the solution, starting at the top and working your way down. Wipe the squeegee blade after each pass to avoid streaks.
  • Managing Stubborn Spots: For particularly tough spots or dirt, you may need to use a bit more elbow grease. Scrub gently with a sponge or use a specialized cleaning tool designed for outdoor windows.

4. Tackling Tough Stains and Hard Water Spots

Hard water stains and stubborn grime can make window cleaning more difficult. Here’s how to handle these challenges:

• Dealing with Hard Water Stains

  • Using Vinegar and Water: Hard water stains are often caused by mineral deposits left behind after water evaporates. To remove these stains, apply a mixture of equal parts water and white vinegar to the affected area. Let it sit for a few minutes, then scrub gently with a sponge.
  • Commercial Products: If natural methods aren’t effective, you can use a commercial cleaner specifically designed to remove hard water stains. Follow the manufacturer’s instructions to avoid damaging the glass.

• Removing Persistent Grime

  • Razor Blade Technique: For stuck-on dirt, paint, or other debris, use a razor blade to carefully scrape it off. Hold the blade at a slight angle and move it in one direction to avoid scratching the glass.
  • Specialty Cleaners: Some grime may require a stronger cleaner. Specialty glass cleaners are available for stubborn dirt, and they can be particularly useful for outdoor windows that haven’t been cleaned in a while.

5. Tips for Maintaining Clean Windows

Keeping your windows clean doesn’t have to be a constant chore. With regular maintenance, you can enjoy clear, streak-free windows all year round.

• Regular Cleaning Schedule

  • How Often to Clean: Ideally, you should clean your windows inside and out at least twice a year. If you live in an area with high pollution or lots of pollen, you may need to clean them more frequently.
  • Preventing Future Build-up: Consider using a rain-repellent or anti-static spray to keep your windows cleaner for longer. These products help prevent dirt and water from sticking to the glass.

• Seasonal Considerations

  • Spring and Fall Cleaning: Clean your windows thoroughly in the spring to remove winter grime, and again in the fall to prepare for winter. This ensures your windows are clean and clear throughout the year.
  • Cleaning Windows in Winter: If you need to clean your windows during the winter, use warm water (but not hot) to prevent the glass from cracking. Work quickly to avoid the water freezing on the glass.

6. FAQs

Q1: How often should I clean my windows?
It’s recommended to clean your windows at least twice a year, in the spring and fall. However, homes in areas with high pollution or dust may require more frequent cleaning.

Q2: What’s the best solution for streak-free windows?
A mixture of equal parts water and white vinegar or a few drops of dish soap in water is effective for achieving streak-free windows. Use a microfiber cloth or squeegee for the best results.

Q3: How do I clean second-story windows from inside?
Use an extension pole with a squeegee and brush attachment or a magnetic window cleaner to reach second-story windows from inside. These tools allow you to clean both sides of the glass without needing a ladder.

Q4: Can I clean windows without using a ladder?
Yes, with the right tools like extension poles and magnetic window cleaners, you can clean hard-to-reach windows without needing to use a ladder.

Q5: What’s the safest way to clean windows during winter?
Use warm (not hot) water to prevent the glass from cracking and work quickly to avoid freezing. If possible, wait for a milder day or clean windows that are exposed to sunlight.

Q6: How can I prevent fingerprints and smudges on glass windows?
After cleaning, apply a glass protector or anti-static spray to help repel fingerprints and smudges. Regularly wiping down windows with a microfiber cloth can also help maintain their appearance.