Cleaning windows can be a tedious task, especially if you have a large home or hard-to-reach windows. A power washer, or pressure washer, is a tool that can make this task easier and more efficient. While power washers are often associated with heavy-duty cleaning jobs like washing driveways or siding, they can also be used to clean windows effectively if used correctly.
In this article, we’ll explain how to safely wash windows with a power washer, including important preparation steps, techniques, and tips for achieving streak-free, spotless results.
Understanding Power Washing Windows
1. Can You Use a Power Washer on Windows?
Yes, you can use a power washer to clean windows, but it requires caution and the right equipment. Windows are delicate, and too much pressure can cause damage, such as cracking the glass or breaking the seals around the window panes. Therefore, it’s essential to use the right pressure setting and nozzle for window cleaning. Using a low-pressure setting and proper techniques will allow you to clean the glass without causing harm.
2. Benefits of Using a Power Washer on Windows
Using a power washer for window cleaning has several advantages. It can save time, especially if you have a large area to clean or multiple floors of windows. It also provides a more thorough cleaning than traditional methods, reaching corners, frames, and higher windows that are difficult to access with a sponge or cloth.
Additionally, a power washer allows you to clean windows without having to physically climb up on a ladder, which makes the process safer and less tiring.
Preparing to Wash Windows with a Power Washer
1. Choose the Right Power Washer and Nozzle
Not all power washers are suitable for window cleaning. For washing windows, an electric power washer is preferable because it provides lower pressure compared to gas-powered models, which are more powerful and can potentially damage windows.
The nozzle you choose is just as important. A nozzle with a wide-angle spray, such as a 25-degree or 40-degree nozzle, is ideal for washing windows. These nozzles produce a gentler spray that won’t damage the glass or window frames. Avoid using nozzles with a narrow spray (0- or 15-degree nozzles), as they produce too much pressure for delicate surfaces like glass.
2. Adjust the PSI for Safe Cleaning
When cleaning windows with a power washer, it’s important to use a lower PSI (pounds per square inch) to avoid damaging the glass. A PSI of 1,500 or lower is ideal for windows. Some power washers allow you to adjust the pressure, so make sure to set it to the appropriate level before starting the job. If your machine doesn’t have adjustable settings, be cautious about using it on windows if it’s too powerful.
3. Use a Cleaning Solution
While water alone can remove some dirt and grime, using a cleaning solution specifically designed for windows will give you better results. Many power washers come with a detergent tank or soap applicator attachment. You can fill this with a mild window cleaner or a mixture of water and liquid soap.
Avoid using harsh chemicals that could damage your windows or leave streaks. If you don’t have a soap applicator, you can apply the cleaning solution manually with a spray bottle before rinsing it off with the power washer.
4. Prepare the Windows and Surrounding Area
Before using the power washer, take a few minutes to prepare the area:
- Close all windows tightly to prevent water from leaking inside.
- Remove any nearby objects that could get in the way or be damaged by water.
- Protect window seals and any fragile trim with tape if they are old or cracked.
- If your windows have screens, it’s best to remove them before cleaning. Power washing screens could cause them to tear or bend.
Steps for Washing Windows with a Power Washer
1. Apply the Cleaning Solution
Start by applying the cleaning solution to the windows. If your power washer has a soap applicator attachment, switch the machine to the soap setting and apply an even layer of the cleaning solution to the entire window surface. Work from top to bottom to ensure the soap covers the window thoroughly.
If you’re applying the soap manually, use a spray bottle to mist the windows with your cleaning solution. Allow the soap to sit for a few minutes to break down dirt and grime, but don’t let it dry on the glass.
2. Rinse the Windows with Low Pressure
Once the cleaning solution has had time to work, it’s time to rinse the windows. Switch your power washer to a lower-pressure setting and attach the wide-angle nozzle. Start rinsing from the top of the window, working your way down to ensure that dirt and soap are washed away effectively.
Keep the nozzle at a safe distance from the glass — at least 6 to 12 inches away — to prevent too much pressure from damaging the window. If needed, you can adjust the distance or pressure slightly to get a better clean, but always err on the side of caution.
3. Clean Window Frames and Sills
Don’t forget to clean the window frames and sills. These areas tend to accumulate dirt and grime, especially on exterior windows. Use the same low-pressure setting and wide-angle nozzle to gently wash these areas. Be careful not to direct water into gaps or cracks, as this could lead to water damage or mold growth inside the walls.
If the frames or sills are particularly dirty, you may need to scrub them manually with a brush and cleaning solution before rinsing with the power washer.
4. Dry the Windows
After rinsing, it’s important to dry the windows to prevent water spots or streaks. Use a squeegee to remove excess water from the glass, working from top to bottom in a smooth motion. Wipe the squeegee blade with a cloth after each pass to avoid transferring dirt back onto the window.
For smaller windows or hard-to-reach spots, a microfiber cloth can be used to dry the glass. Drying the windows immediately will leave them spotless and prevent streaking.
see also: What Is the Best Pressure Washer to Buy?
Safety Tips for Power Washing Windows
1. Avoid Using Too Much Pressure
Using too much pressure is one of the biggest mistakes people make when power washing windows. High-pressure water can crack or break glass, especially on older windows. Always stick to low-pressure settings and keep the nozzle at a safe distance from the window.
2. Watch Out for Electrical Hazards
If you’re cleaning windows near electrical outlets, lights, or wires, be cautious. Water and electricity are a dangerous combination, so take care not to spray directly onto electrical components. If necessary, cover outdoor outlets and light fixtures with waterproof covers before starting.
3. Be Careful Around Seals and Caulking
Old or damaged seals and caulking around windows can be vulnerable to high-pressure water. If your windows have any cracks in the seals, avoid spraying water directly into these areas to prevent leaks or further damage.
Conclusion
Washing windows with a power washer can save you time and effort, but it’s important to approach the task carefully to avoid damage. By selecting the right power washer, using the correct settings, and following safe cleaning techniques, you can achieve sparkling clean windows without the risk of cracks, streaks, or leaks.
A good power washer, combined with the right cleaning solution and nozzle, can make your windows look like new. Just remember to use low pressure, apply soap properly, and dry the windows afterward for the best results.