Never Attempt Window Cleaning in Direct Sunlight or Freezing Temperatures

Cleaning windows might look simple, but timing and technique make all the difference. Attempting to wash windows in direct sunlight or freezing temperatures can leave streaks, cause the solution to dry too quickly, or even damage the glass.

To get clear, streak-free results every time, follow these proven steps from Optimum Cleaning Solutions.

Supplies You’ll Need

• Window bucket filled with fresh water and about 1 ounce of dish detergent

• Clean window scrubber (applicator) to apply solution

• Unworn squeegee to remove water and dirt

• Lint-free towels for cleaning your squeegee and wiping edges

• Razor scraper to remove tape, stickers, or stubborn residue

(Tip: Always use the scraper only on wet glass to avoid scratching.)

Step 1: Washing the Windows

1. Work one window at a time.
   This prevents the cleaning solution from drying on the glass before you can remove it.

2. Use plenty of water for exterior windows.
   Apply a generous amount of your cleaning solution with the scrubber — this helps lift dirt effectively.

3. Remove residue safely.
   Use the razor blade only while the glass is wet to scrape off tape, paint, or other materials.

4. Use less water on interior windows.
   Wring out the scrubber with your hand to avoid soaking window ledges, walls, or carpets. You may need to scrub a little harder since there’s less water helping lift the dirt.

5. Change your cleaning solution as needed.
   If it starts to look cloudy or dirty, replace it with fresh water and detergent for best results.

Step 2: Drying the Windows

Once you’ve covered the entire pane with cleaning solution:

1. Start your squeegee strokes.
   Horizontal strokes work best for most windows.

2. Wipe the squeegee blade after each pass.
   Use a lint-free towel to remove water and debris from the rubber edge. Placing a wet blade back on the glass will leave streaks.

3. Overlap your strokes slightly.
   This ensures no lines are left between passes.

4. Angle the squeegee correctly.
   Tilt it so water flows toward the wet portion of the window, not over the clean, dry area.

Step 3: Wipe the Edges

After squeegeeing, wipe all edges and corners of the window with a clean, dry towel.
This removes any remaining drips or water marks. It’s easiest to do this before the glass dries completely.

Once the edges are clean, move on to the next pane — and enjoy the satisfaction of crystal-clear, streak-free windows!

Pro Tip from OCS

For professional-grade results, schedule your window cleaning on a cloudy day or during cooler morning hours. Avoid direct sunlight, which can cause premature drying and streaks, and never wash windows in freezing weather — the water can freeze on contact and damage the glass.

Need Professional Window Cleaning?

If your facility or business could benefit from a streak-free professional shine, let our trained experts handle it.
We offer commercial window cleaning services for offices, retail spaces, and multi-story buildings across the Toledo area.

📞 Call (419) 206-4520 or Request a Free Quote today!