10 Common Window Cleaning Mistakes and How to Avoid Them

At R&R Pressure Washing, we understand that clean windows can completely transform the look and feel of your home or business. While window cleaning may seem straightforward, many people unknowingly make mistakes that lead to streaks, scratches, and even damage to their windows.

To help you achieve crystal-clear, streak-free results, we highlight the 10 most common window cleaning mistakes—and how to avoid them.

1. Cleaning Windows on a Sunny Day

We get it—bright, sunny days make it tempting to tackle outdoor cleaning tasks. However, when the sun shines directly on your windows, the cleaning solution dries too quickly, leaving behind frustrating streaks.

How to avoid it:
Choose a cloudy day or clean windows in the early morning or late afternoon when the sun isn’t as intense. This gives you enough time to properly wipe away the solution before it dries.

2. Using the Wrong Cleaning Solution

Not all cleaning solutions are created equal. Many store-bought glass cleaners contain harsh chemicals that leave residue, while others may not be strong enough to cut through grime.

How to avoid it:
We recommend using a vinegar and water solution (one part vinegar to two parts water) or a high-quality, streak-free glass cleaner. If you’re dealing with particularly tough grime, a drop of dish soap can help break down dirt.

3. Ignoring the Window Frames and Sills

Cleaning only the glass and ignoring the frames and sills is a common mistake. Over time, dirt, dust, and even mould can accumulate in these areas, leading to potential damage.

How to avoid it:
Before cleaning the glass, wipe down the window frames and sills with a damp cloth. This prevents dirt from being pushed onto the freshly cleaned glass.

4. Using Paper Towels or Newspapers

We often see people using paper towels or newspapers to clean their windows, thinking they’ll achieve a streak-free shine. However, paper towels leave behind lint, and newspapers can transfer ink onto the glass.

How to avoid it:
Use a microfiber cloth or a squeegee. Microfiber cloths effectively trap dirt and prevent streaks, while squeegees provide a professional-level finish.

5. Scrubbing Too Hard on Tough Stains

Hard water stains, bird droppings, and tree sap can be stubborn, but aggressive scrubbing can scratch the glass.

How to avoid it:
For tough stains, soak the affected area with a vinegar solution or specialized glass cleaner for a few minutes before gently wiping it away with a non-abrasive sponge. A razor blade (used at a low angle) can also help with stuck-on debris, but it must be handled carefully to avoid scratches.

6. Not Changing Your Cleaning Water Frequently

If you’re cleaning multiple windows using the same bucket of water, you might be spreading dirt rather than removing it.

How to avoid it:
Change your cleaning solution frequently—especially if you’re tackling very dirty windows. This ensures you’re always working with clean, fresh water.

7. Forgetting to Dry the Windows Properly

Leaving windows to air-dry often results in unsightly streaks and water spots.

How to avoid it:
Use a clean microfiber cloth or a squeegee to dry the windows immediately after cleaning. When using a squeegee, wipe the blade between strokes to prevent streaks.

8. Using Too Much Cleaner

More cleaning solutions don’t always mean better results. Excess cleaner can leave a sticky residue, attracting more dirt over time.

How to avoid it:
Spray a moderate amount of cleaner—just enough to cover the glass. If needed, apply more in layers rather than drenching the window in one go.

9. Overlooking Indoor Window Cleaning

Many homeowners focus on the exterior of their windows while neglecting the inside. Indoor windows accumulate dust, fingerprints, and cooking residue, leading to a dull appearance.

How to avoid it:
Make window cleaning a full-circle job by cleaning both the inside and outside regularly. Indoor windows often require gentler cleaning methods, such as a microfiber cloth and a mild cleaning solution.

10. Not Hiring a Professional When Needed

Some windows—especially high, hard-to-reach ones—require professional equipment and expertise. Attempting to clean them yourself can be risky and inefficient.

How to avoid it:
If your windows are too high or heavily soiled, it’s best to call in professionals like R&R Pressure Washing We have the right tools, techniques, and safety measures to ensure spotless, damage-free results.

Final Thoughts

Avoiding these common window cleaning mistakes can make a huge difference in achieving sparkling, streak-free glass. If you want flawless results without the hassle, we’re here to help!

At R&R Pressure Washing, we offer professional window cleaning services tailored to your needs. Whether you need residential or commercial window washing, we guarantee a crystal-clear finish every time.

Call us today to schedule your window cleaning appointment!