How to Clean Vinyl Siding

Vinyl siding can accumulate dirt, grime, and even algae over time, detracting from your home’s appearance. Fortunately, cleaning vinyl siding is a manageable task for most homeowners.

In this video and guide, paint expert Mauro Henrique cleans the vinyl siding of a house with a power washer. He first explains the basics of a power washer and discusses the differences between colored tips when it comes to pressure washing, and why it is extremely important to know what each means.

Choosing a Power Washer for Your Vinyl Siding

Power washers are the preferred tool for cleaning vinyl siding. In the video above, Henrique used a 3600 PSI Gas Pressure Washer, manufactured by Dewalt and available for rent from The Home Depot. However, if done incorrectly, power washing can be hazardous to yourself and your siding.

Henrique urges caution when using a power washer. Fortunately, most power washers use the same color-coded system for their nozzles.

• Red tips: These are the most powerful tips. The tip isn’t angled at all, so it cleans aggressively. Red tips are good for hard surfaces like concrete or masonry but not for siding.
• Yellow tips: These are 15-degree angle tips that are still pretty powerful. They are best for hard surfaces, not vinyl.
• Green tips: The green tip nozzle has a 25-degree angle, which decreases the pressure and minimizes the risk of damaging the material. However, the green tip still allows for a strong spray, so experience is recommended while using this nozzle on vinyl siding.
• White tips: These have a 40-degree angle and are designed for softer surfaces and materials. They are great for all types of siding, including vinyl and wood. They are best for inexperienced homeowners trying to power wash their houses.
• Black tips: Also called the detergent nozzle, it is the tip you use to spray any cleaning solutions onto any surface.

Check the power washer owner’s manual to make sure you are using the appropriate tip angle when pressure washing vinyl siding. You’ll need a detergent nozzle (black) and a 40-degree angled tip (white).

Safety Precautions

When using a power washer, follow these essential safety measures:

• Wear safety glasses to protect your eyes from debris and water spray
• Close all windows in the area you’re cleaning
• Turn off power to any electrical outlets in the cleaning zone
• Maintain a distance of at least 3 feet from the surface you’re cleaning
• Be cautious of ladder placement and stability if cleaning higher areas

Preparing to Clean Vinyl Siding

Before you start power washing, proper preparation is key to achieving the best results Prepare the area you will be pressure washing by closing any windows and shutting off power to any electrical outlets in the area.

Making the Cleaning Solution

While commercial cleaners are available, a simple mixture of water and white vinegar can be an effective and eco-friendly option. Mix 70% water with 30% vinegar in a bucket or directly in the power washer’s detergent tank.

Then, you’re ready to set up the pressure washer:

1. Connect your garden hose to the power washer’s water inlet.
2. Attach the pressure hose to the power washer’s outlet.
3. Insert the chemical injector or detergent hose into your cleaning solution.
4. Choose the detergent nozzle (black).
5. Ensure all connections are secure before starting the machine.

Vinyl Siding Cleaning Process

With your power washer set up and safety precautions in place, you’re ready to begin cleaning your vinyl siding.

1. Start with the black nozzle to apply the cleaning solution.
2. Begin at the bottom of the wall and work your way up to prevent streaking.
3. Apply the solution in smooth, overlapping strokes.
4. Allow the solution to sit for 5-10 minutes, but don’t let it dry on the surface.

Once it’s all washed, you’re ready to rinse.

1. Switch to the 25-degree (green) or 40-degree (white) nozzle for rinsing.
2. Begin at the top of the wall and work your way down.
3. Use steady, overlapping strokes to ensure thorough cleaning.
4. Pay extra attention to areas with visible dirt or algae growth.

Tips for Effective Vinyl Siding Cleaning

To achieve the best results when cleaning your vinyl siding:

• Clean on a cloudy day to prevent the cleaning solution from drying too quickly.
• Work in manageable sections, especially on larger homes.
• Rinse thoroughly to remove all cleaning solution and prevent residue.
• Clean your siding at least once a year to maintain its appearance and longevity.

Maintaining Vinyl Siding

Maintaining your vinyl siding involves regular inspections, prompt repairs, and routine cleanings. Inspect your vinyl siding regularly for signs of damage or wear. Look for cracks, warping, or loose panels. Early detection of issues allows for timely repairs, preventing further damage.

Address any damage to your siding as soon as possible. This might involve:

• Replacing broken or cracked panels.
• Tightening loose panels.
• Sealing gaps to prevent water infiltration.