6 Things to Consider Before Power Washing Your Deck

Follow these six tips to ensure health and long life for your deck.

To minimize damage and ensure the longevity of your deck, there are a few things you’ll want to consider before power or pressure washing.

  1. Deck Material

    The material of your deck plays a significant role in determining how to approach power washing. Different types of wood, composite decking, or other materials may have specific cleaning requirements or precautions. See “How To Properly Care for Your Deck” for more detailed instructions.

  2. Potential for Damage

    Power washing can be a powerful cleaning method, but it also has the potential to damage your deck if not used properly. Keep in mind:
    • Pressure Setting: Adjust the pressure washer to an appropriate level for your deck material. Softer woods generally require lower pressure to prevent splintering or gouging.
    • Nozzle Selection: Use a wider spray pattern nozzle, such as a 25-degree or 40-degree fan tip, to distribute the pressure evenly and reduce the risk of concentrated damage.
    • Distance and Technique: Maintain a consistent distance from the deck surface and work in a controlled, even manner. Avoid holding the nozzle too close or staying in one spot for too long to prevent etching or creating uneven patterns.

  3. Age and Condition

    Consider the age and overall condition of your deck. Older or more weathered decks may require extra care or gentler cleaning to avoid further wear and tear. Inspect the deck for any structural issues or loose boards before starting the power washing process. In some cases, it may be a good idea to replace the deck entirely.

  4. Previous Finishes

    If your deck has a previous finish or a coat of paint, check if it’s in good condition or needs to be removed. Power washing can strip away loose or peeling finishes, but it may not be sufficient for thorough removal. In such cases, you might need to employ additional methods like sanding or using a deck stripper. Power washing can help save time during a repainting or deck refinishing project by removing the bulk of the previous coating before sanding.

  5. Environmental Considerations

    Ensure that you take environmental considerations into account during the power washing process. Avoid washing away dirt and debris into storm drains or water bodies. If you’re using a deck cleaner, choose environmentally friendly options whenever possible.

  6. After Power Washing

    After washing your deck, consider some further tips to maintain your deck and ensure it lasts as long as possible. Sealing, staining, or applying a protective finish will enhance its appearance and create a protective barrier that will keep your deck from deteriorating in the elements.


Now, you’ll be better prepared to power or pressure wash your deck safely and effectively while minimizing the risk of damage.

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