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6 Steps to Power Wash a Deck Without Damaging It
If your deck’s vibrant color has faded over the years and you’re thinking of re-staining, power wash a deck is the first step to achieving a fresh look. Not only does it remove layers of dirt, grime, and mildew, but it also prepares your deck for refinishing, ensuring your stain adheres properly. Follow these steps to power wash your deck like a pro—without causing damage.
Setting Up Your Power Washing Station
Want a sparkling clean deck that looks brand new? Power washing is the way to go! It’s a quick and effective way to remove dirt, grime, mold, and mildew, leaving your deck looking fresh and inviting. Follow these steps to ensure a successful cleaning session.
Before you begin, it’s crucial to gather the right equipment and understand how to use it safely.
- Gather Your Supplies: You’ll need a power washer, a garden hose, cleaning solution (if necessary), and protective gear.
- For beginners, check out our guide on How to Use a Power Washer.
- Safety First: Always wear safety gear such as goggles, gloves, and sturdy shoes. Be sure to familiarize yourself with the manufacturer’s safety instructions for your power washer.
1. Select the Right Power Washer
Choosing the correct pressure setting is crucial to avoid damaging your deck. For softwoods like cedar or pine, use a washer with a pressure range of 500 to 600 psi. For pressure-treated wood, you can go up to 1200 to 1500 psi. A 2000 psi machine is also effective but should be used carefully with a wide nozzle (15° or 18°) to disperse the pressure.
Pro Tip: If you’re unsure about the power setting, start with the lowest pressure that cleans effectively to avoid gouging the wood.
2. Pre-Treat the Surface with a Deck Brush
To prevent damage and ensure a clean surface, preparation is key.
Protect Surrounding Areas: Cover nearby plants or landscaping with tarps to avoid damaging them during the washing process.
Clear the Deck: Remove furniture, plants, and other objects that could get in the way or be damaged by the water pressure.
Before you power up the washer, scrub the deck with a mixture of mild dish detergent or oxygen bleach. This helps loosen surface dirt and makes power washing more effective. If you have a composite deck, a thorough scrubbing might be all you need.
3. Test the Washer on a Small Section
Before tackling the entire deck, test the washer on a hidden area or a stair tread at a low pressure. This helps you get a feel for the power washer and ensures you won’t damage the wood. Aim the nozzle at least 12 to 18 inches away from the surface to avoid leaving marks.
4. Prep the Area
Clear your deck of furniture, plants, and décor. Cover nearby plants with a tarp to protect them, and close any windows and doors to prevent water from entering the house. Be mindful of the direction of the spray to avoid soaking the house.
5. Power Wash a Deck From the Top Down
Using the right technique is essential for achieving a flawless finish on your deck.
- Start at the Top: Begin by washing the highest points, like the railings and vertical surfaces. This prevents dirty water from dripping onto areas you’ve already cleaned.
- Work Your Way Down: Once the vertical surfaces are clean, move to the deck floor. Clean in sections and be careful not to saturate one area for too long to avoid damage.
Use even strokes and follow the direction of the wood grain. Avoid focusing on one area for too long, as this can damage the wood. Overlap each section slightly to ensure an even clean.
Pro Tip: Keep the nozzle moving steadily, and don’t go back and forth or in a zigzag pattern—this can cause scoring on the wood.
For best results, tackle your deck floor with these techniques:
- Clean in Sections: Overlap each pass with the power washer by about half to ensure a thorough clean. Avoid blasting the wood with high pressure.
- Nozzle Selection: Use a 15° or 25° nozzle for general cleaning. For tougher stains, a 10° nozzle will provide a wider spray to loosen grime without damaging the wood.
Once your deck is clean, follow these final steps for the perfect finish.
- Rinse Thoroughly: After power washing, use a garden hose to remove any remaining cleaning solution or dirt.
- Let the Deck Dry: Allow the deck to dry completely before replacing furniture or other objects.
- Admire Your Work: Step back and enjoy your newly cleaned deck!
6. Let the Deck Dry Completely
If you have a wood deck once you’ve finished power washing, let the deck dry for a day or two before applying any stain or sealer. If the wood is still damp, the stain won’t adhere properly and will begin to peel after a week.
Not Comfortable Power Washing? Consider These Alternatives
- Hire a Pro: Power washing services typically cost $90 to $150 for 300 square feet, depending on deck size and material.
- Sand It Instead: If your deck is severely weathered, sanding is another option. Renting an orbital sander might be ideal for large areas.
- Stick with a Scrub Brush: For less severe grime, a scrub brush with mild soap and water might do the trick, though it’s more time-consuming.
Conclusion: The Payoff of a Clean Deck
Power washing your deck restores its appearance and improves its longevity. Whether you’re getting ready for summer barbecues or preparing your home for sale, a clean, well-maintained deck adds value to your property.
Need to rent a power washer? Visit Toolbox for affordable rental options and make your deck look brand new!
Get Your Surfaces Sparkling with Toolbox!
Keeping your outdoor spaces clean and well-maintained doesn’t have to be a hassle. With Toolbox, you can easily rent powerful tools like power washers to tackle tough cleaning jobs, all without the cost and commitment of purchasing. Whether it’s reviving your deck, cleaning your driveway, or freshening up your siding, Toolbox has the right tools to help you get the job done efficiently.
Ready to refresh your home’s exterior? Visit Toolbox today to rent top-quality equipment and give your space the deep clean it deserves!