Dangers of Pressure Washing Windows

Pressure washing your windows might seem like a quick and efficient cleaning method, but it is generally not a recommended window cleaning method. The risks of damage are high, and the benefits are limited compared to safer alternatives. Understanding these dangers and exploring better methods can help protect your windows and home.

Is Cleaning Windows with a Pressure Washer Good?

If you’re a homeowner in Bluffton, SC, planning to use a pressure washer to sparkle your dull windows again, read the points below.

1. Risk of Damage:
Pressure washers can easily damage windows. High pressure can shatter glass, break seals, and damage window frames. Incorrect spray targeting and angles can further weaken the glass and force water into the window frame and wall cavities, leading to mold and rot.

2. Minimize Risks:
If you choose to use a pressure washer to clean your windows, use the lower pressure setting (1300-1700 PSI), keep the nozzle 3-5 feet away from the window at a 30-degree angle, and use a wide 40-60-degree spray pattern nozzle to clean any dirt and grime. Do not point spray directly on the windows as it puts too much pressure on the window glass.

Aluminum and vinyl frames are more durable than wooden ones. Always check window conditions before washing.

3. Preparation:
Before starting, remove screens, check for cracks or damage, and cover nearby plants, soil, furniture, and other surfaces to protect them from chemicals and high-pressure water.

4. Technique:
Use the correct ratio of cleaning solution to water. Start at the top of the window and work downward, keeping the nozzle at least three feet away from the glass to prevent damage.

5. Garden Hose:
For a safer alternative, use a garden hose with a gentle spray. Combine soap and water with a cloth or sponge to clean the windows, followed by a rinse with the hose.

Also Read:

Can You Pressure Wash in the Rain?
How Often Should You Pressure Wash Your Driveway?

What Are the Pros and Cons of Pressure Washing Windows?


  • Quick Cleaning: Removes dirt, mildew, and grime quickly and efficiently.
  • Hard-to-Reach Areas: Can reach high and difficult areas without much effort.
  • Eco-Friendly: Does not require harsh chemicals if used correctly.


  • Risk of Damage: High pressure can shatter glass, break seals, and damage window frames.
  • Water Leaks: Improper technique can force water into wall cavities which can easily damage them.
  • Chemical Harm: Cleaning solutions can harm nearby plants and soil, and runoff can impact the environment.
  • Not Suitable for All Windows: Older or damaged windows can be easily broken or further damaged.
  • Inexperience: DIY pressure washing can lead to improper handling and increased risk of damage.

What Are the Best Ways to Clean Windows?

1. Soap and Water:
Use a mixture of soap and water with a soft cloth or sponge to clean windows. Rinse with a garden hose.

2. Vinegar Solution:
Apply a mixture of vinegar and water to the window with a sponge or mop, then wipe dry with a rubber-bladed squeegee from top to bottom.

3. Avoid High Pressure:
Do not use a pressure washer. High pressure can damage windows.

4. Check for Damage:
Before cleaning, inspect windows for cracks, damaged seals, or old caulking to prevent leaks and further damage.

5. Use Proper Tools:
For higher windows, use a sponge mop attached to a pole. Dry with a clean towel to prevent streaks.

Can Pressure Washing Damage Window Seals?

Yes, pressure washing can damage window seals. High-pressure water can break the seals on double-paned windows, leading to moisture and fogging between the glass. It can also damage caulking and weather stripping around the window frame, causing leaks and water damage inside the home. To avoid these issues, it’s best to use low-pressure methods or traditional cleaning techniques.

Is It Worth Calling a Professional Window Washer?

Yes, calling a professional window washer or window cleaner is worth it. A pressure washer can easily cause damage to your windows if you don’t know what you’re doing. Here are a few reasons why professionals are better at washing windows:

1. Experience and Expertise:
Professionals know the correct pressure settings and techniques to avoid damaging windows and seals.

2. Proper Equipment:
They use the right tools and techniques to ensure safe and effective cleaning.

3. Safety:
Professionals know how to avoid potential hazards, such as water leaks and broken seals. They have the right equipment and training to safely clean high and hard-to-reach windows.

4. Time-Saving:
Hiring a professional saves you time and effort, especially for large or hard-to-reach windows.

5. Prevent Damage:
They can identify and address any pre-existing damage such as weak seals or cracks, and take steps to prevent further damage.

6. Efficiency:
With their experience, professionals can clean windows quickly and thoroughly.

Call Now Button