Power washing a house is an effective way to clean the exterior and maintain its appearance. Over time, dirt, mold, mildew, and grime can accumulate on your home’s siding, making it look dull and neglected. Power washing, also known as pressure washing, uses high-pressure water to remove these contaminants. This guide will walk you through the steps of power washing your house safely and effectively.
See Also: How Much Does It Cost to Pressure Wash a House?
Understanding Power Washing
What is Power Washing?
Power washing uses a high-pressure water spray to remove dirt, mold, grime, dust, mud, and other unwanted substances from surfaces and objects such as buildings, vehicles, and concrete surfaces. The volume of a power washer is measured in gallons or liters per minute, and the pressure is measured in pounds per square inch (PSI).
Benefits of Power Washing
Regular power washing can significantly extend the life of your home’s exterior. It helps prevent damage caused by mold, mildew, and dirt buildup. It also improves curb appeal and can increase the value of your property. Furthermore, it prepares surfaces for painting or staining, ensuring a longer-lasting finish.
When to Power Wash Your House
Ideally, you should power wash your house once a year. Spring or early summer is the best time, as it allows you to clean off the grime accumulated over the winter and prepare your house for the warm months. However, you might need to power wash more frequently if you live in an area with high humidity, frequent rain, or heavy pollution.
Safety Precautions
Personal Safety Gear
Before starting, ensure you have the appropriate safety gear. Wear safety goggles to protect your eyes from debris and flying particles. Use ear protection to guard against the loud noise of the power washer. Gloves and sturdy, non-slip footwear are also essential to protect your hands and feet.
Property Protection
Protect your property by covering nearby plants, shrubs, and outdoor furniture with plastic sheeting or tarps. Close all windows and doors to prevent water from getting inside your home. If you have exterior electrical outlets, ensure they are covered and sealed.
Choosing the Right Equipment
Selecting a Power Washer
Power washers come in different types and sizes. For residential use, an electric power washer is often sufficient and easier to handle than a gas-powered one. Look for a machine with a PSI of 2,000 to 3,000 and a flow rate of 2 to 4 gallons per minute (GPM) for the best results.
Nozzles and Attachments
Power washers come with various nozzles, each providing a different spray pattern. The most common nozzles are:
- 0-Degree Nozzle: Produces a pinpoint jet of water, ideal for removing tough stains but can damage surfaces if not used carefully.
- 15-Degree Nozzle: Offers a narrow fan spray, suitable for removing tough dirt and stains.
- 25-Degree Nozzle: Provides a wider spray, ideal for general cleaning tasks.
- 40-Degree Nozzle: Produces a broad spray, perfect for rinsing and gentle cleaning.
For washing your house, start with a 25-degree nozzle and switch to a 15-degree nozzle for tougher spots.
Preparation Steps
Inspect the Exterior
Before you begin, inspect the exterior of your house. Look for any damage, such as cracks, loose siding, or peeling paint. Make necessary repairs to prevent water from entering your home during the cleaning process.
Remove Obstacles
Clear the area around your house. Remove outdoor furniture, decorations, and any other objects that might obstruct your work. Trim back any overhanging branches or shrubs that are close to the house.
Pre-Treat Stains
For areas with heavy stains or mold growth, pre-treat them with a cleaning solution. Mix a solution of water and a commercial cleaner or a mixture of water, bleach, and detergent. Apply the solution with a garden sprayer and let it sit for about 10-15 minutes before power washing.
Steps to Power Wash Your House
Step 1: Set Up Your Power Washer
Set up your power washer according to the manufacturer’s instructions. Connect the garden hose to the power washer and turn on the water supply. Attach the appropriate nozzle to the spray wand.
Step 2: Test the Spray Pattern
Before starting on your house, test the spray pattern on a small, inconspicuous area. This will help you get a feel for the pressure and ensure it won’t damage the surface.
Step 3: Start from the Bottom
Begin power washing at the bottom of the house and work your way up. This prevents dirty water from running down over cleaned areas. Hold the spray wand at a slight angle and keep it moving to avoid concentrating the pressure in one spot, which can damage the surface.
Step 4: Clean in Sections
Work in small sections, about 3-4 feet wide. This ensures you clean thoroughly and prevents the water from drying before you have a chance to rinse it off. Use overlapping strokes to ensure even coverage.
Step 5: Rinse from the Top Down
Once you have cleaned the entire surface, rinse from the top down. This helps wash away any remaining detergent or loosened dirt. Use a wide-angle nozzle to prevent damage during the rinse process.
Special Considerations
Cleaning Different Siding Materials
Different siding materials require different cleaning techniques:
- Vinyl Siding: Generally easy to clean with a power washer. Use a lower pressure setting and avoid getting water behind the siding.
- Wood Siding: Use a lower pressure and a wider spray pattern to avoid damaging the wood. Be careful not to saturate the wood, as this can lead to mold growth.
- Brick: Brick can withstand higher pressure, but be cautious around mortar joints. Use a medium pressure setting and a fan spray nozzle.
- Stucco: Use a lower pressure setting and be careful not to damage the delicate surface. Pre-treat any stains and mold growth with a suitable cleaner.
Using Cleaning Solutions
For tough stains and mold, you might need to use a cleaning solution. Choose a cleaner specifically designed for power washing and follow the manufacturer’s instructions. Apply the cleaner using a low-pressure nozzle or a garden sprayer, let it sit for the recommended time, then rinse thoroughly.
Handling Stubborn Stains
For particularly stubborn stains, you might need to scrub the area with a brush after applying the cleaning solution and before rinsing. Use a brush with soft to medium bristles to avoid damaging the surface.
Post-Washing Tips
Inspect for Missed Spots
After you have finished power washing, inspect your house for any missed spots or areas that need additional cleaning. Touch up these areas as needed.
Clean Up
Disconnect the power washer and drain any remaining water. Rinse off the nozzles and attachments to remove any debris. Store the power washer and accessories in a dry, safe place.
Maintenance Tips
Regular maintenance of your power washer will ensure it lasts longer and performs better. Follow the manufacturer’s instructions for routine maintenance, such as checking hoses and connections, cleaning filters, and replacing worn parts.
Dispose of Waste Properly
If you used any cleaning solutions, ensure they are disposed of properly according to local regulations. Avoid dumping them in storm drains or natural waterways.
Common Mistakes to Avoid
Using Too Much Pressure
One of the most common mistakes is using too much pressure. This can damage siding, strip paint, and cause water to penetrate your home. Always start with the lowest pressure setting and gradually increase if needed.
Holding the Nozzle Too Close
Holding the nozzle too close to the surface can cause damage. Keep the nozzle at least 6-12 inches away from the surface to avoid gouging or denting.
Not Moving the Wand Constantly
Keeping the spray wand in one spot for too long can cause streaks and uneven cleaning. Keep the wand moving in a steady, sweeping motion.
Ignoring Safety Precautions
Failing to wear safety gear or protect nearby plants and property can lead to accidents and damage. Always follow safety guidelines to protect yourself and your surroundings.
Conclusion
Power washing your house is an effective way to maintain its appearance and longevity. By following the steps outlined in this guide, you can safely and efficiently clean your home’s exterior. Remember to choose the right equipment, take necessary safety precautions, and follow proper techniques for the best results. With regular maintenance, your house will look clean and well-kept for years to come.