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  • Writer's pictureLorenz Esposito

How To Pressure Wash a Deck?

Pressure Washing Deck

A well-maintained deck can elevate your outdoor space, providing a beautiful and functional area for relaxation and entertainment. Over time, however, dirt, grime, and algae can accumulate, dulling the wood’s natural beauty and potentially causing damage. Pressure washing is an effective way to restore your deck to its original luster, but it requires the right techniques to avoid harming the wood. 






Whether you’re a seasoned DIY enthusiast or a first-time user, it’s essential to learn the proper steps for cleaning your deck. By focusing on how to get the best results from a pressure washer you can ensure your deck remains a beautiful focal point of your home or business.





Before You Start Pressure Washing

Thorough preparation is key to achieving a successful, damage-free deck cleaning. Start by gathering the right tools, including:


  • Pressure washer. Opt for a model with adjustable pressure settings and various nozzles so you can change the spray velocity and direction. 


  • Safety gear. Equip yourself with protective eyewear, gloves, and sturdy, high-grip, closed-toe footwear.



  • Scrub brush. A long-handled scrub brush with stiff bristles is handy for tackling stubborn stains before you start pressure washing.


  • Drop cloths. Use these to shield nearby plants or furniture from debris and cleaning solutions.


Safety should be your priority when using a pressure washer. These powerful tools can cause injury or damage if not handled with care. Make sure any electrical outlets you use are GFCI-protected, especially when working with an electric pressure washer. Always avoid pointing the spray at people, animals, or electrical devices.


Also, be cautious with the pressure setting, particularly if your deck is made from softer woods like cedar. Too much pressure can gouge the wood, leaving visible marks or even compromising the deck’s structural integrity over time.



Deck Pressure Washing

Preparing the Deck

Preparing your deck for pressure washing is the essential first step to achieving a flawless finish. With some prep work, you can ensure a smoother, more efficient cleaning process while protecting your deck from potential damage.


  • Clear the area. Remove all furniture, potted plants, and decorations from your deck. This will protect these items and give you unobstructed access to the entire deck surface. Don’t forget to cover plants around and under the deck with a drop cloth to protect them from the cleaning solutions and debris.


  • Inspect the deck. Take a moment to inspect your deck for any loose boards or protruding nails. Repair these issues before washing to prevent further damage. 


  • Sweep and pre-clean. Start by giving your deck a good sweep to clear away loose dirt, leaves, and debris. For tough stains or areas with heavy grime, apply a deck cleaner or mild detergent and scrub it with a brush. This pre-cleaning step helps make pressure washing more effective.


  • Setting up the pressure washer. Connect your pressure washer to a water source using a garden hose. Choose the appropriate nozzle for your deck material; a 40- or 60-degree fan nozzle is usually suitable for most decks. Set the pressure to a lower setting to start, around 500 to 600 PSI for softer woods like cedar or up to 1200 PSI for pressure-treated lumber.


Washing the Deck

With your deck prepped and the pressure washer ready, it's time to begin washing. Properly pressure washing your deck can help rejuvenate the wood’s finish or prepare your space for staining. 


  • Test a small area first. Before starting on the entire deck, test your pressure washer on a small, hidden section. This lets you fine-tune the pressure and technique without risking damage to a more visible area. If you see splintering or gouging, lower the pressure or increase the distance between the nozzle and the deck surface.


  • Start from the house outward. Start pressure washing near the house and gradually work your way outward. This approach prevents dirty water from flowing back onto the areas you've already cleaned.


  • Wash with the grain of the wood. Always spray in the direction of the wood grain. This helps avoid splintering and gives you a cleaner finish.


  • Maintain a safe distance. To prevent gouging, keep the nozzle 8 to 12 inches away from the wood surface. Holding it too close can damage the wood.


  • Use even sweeping motions. Move the wand in smooth, even strokes. Avoid staying in one spot for too long, which can cause uneven cleaning or damage.


For stubborn areas, you may need to make a second pass or use a rotating nozzle attachment. However, be careful not to stay in one spot for too long or make too many passes, as this can damage the wood. If you're unsure about dealing with tough stains, consider hiring a professional pressure washing company to ensure your deck is cleaned properly without causing harm.


Rinse and Let Dry

After cleaning the entire deck, rinse it thoroughly with clean water to remove any remaining cleaning solution or debris. Start at the highest point and work your way down to ensure all soap is washed away.


Once rinsed, allow your deck to dry completely, which typically takes about 48 hours, depending on the weather. Do not walk on the deck or put furniture back until it’s fully dry.


Contact Service Pros for Professional Pressure Washing

While pressure washing your deck can be a satisfying DIY project, there are times when it’s better to rely on the professionals. At The Service Pros, we provide professional affordable pressure washing services for decks, homes, and commercial properties in Raleigh and the surrounding areas. Our team has the expertise and equipment to safely clean your deck, regardless of its condition or wood type.


Ready to give your deck a fresh look? Contact us for a free estimate on power washing services and see the difference professional pressure washing can make for your outdoor space.










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