Wooden decking is a great addition to any outdoor space, but over time, dirt, moss, and algae can build up, making it look dull and even slippery. Regular cleaning with a pressure washer is the most effective way to restore your decking’s natural beauty and keep it safe to use. Follow these steps for the best results.
- Prepare Your Decking
Before using a pressure washer, remove any furniture, planters, or other objects from the decking. Sweep or vacuum with a wet and dry, any loose dirt, leaves, and debris to ensure an even clean.
- Choose the Right Pressure Washer setting and nozzle
For wooden decking, use a pressure washer with an adjustable setting, ideally on level 2 (between 50-70 working bar pressure) to avoid damaging the wood. A gentle nozzle is recommended, as it provides a gentle but effective clean without risk of damaging the paintwork.
- Apply a Detergent
Using a detergent specifically designed for wooden surfaces such as the stone and wood cleaner helps break down grime, and mildew. Apply the detergent with the pressure washer’s foam sprayer, then let it sit for 5-10 minutes to loosen dirt.
- Wash the Decking
Hold the pressure washer 30-50 cm away from the surface and move in long, even strokes, following the direction of the wood grain. Avoid holding the spray in one spot for too long to prevent gouging the wood. Test on a small, hidden area first to ensure the pressure setting is safe for your decking.
- Rinse Thoroughly
After cleaning, rinse the deck with clean water to remove any leftover detergent or dirt. Ensure that all soap residue is washed away to prevent slipperiness.
- Allow to Dry & Apply a Protective Finish
Let the decking dry completely (at least 24-48 hours) before placing furniture back. To protect the wood and prolong its life, consider applying a wood sealant or oil after cleaning.
Tips for Avoiding Damage to Wood and Its Treatment
- Use a lower pressure setting to prevent splintering or stripping the wood finish.
- Keep the nozzle moving—never hold it in one spot too long.
- Follow the grain of the wood to avoid visible streaks or damage.
- Use a detergent made for wood to clean effectively without harsh chemicals.
- Apply a protective sealant after cleaning to restore and protect the surface.
Tips for Maintaining Your Wooden Decking
- Sweep regularly to prevent dirt buildup.
- Clean with a pressure washer at least once a year.
- Avoid using high-pressure settings that may damage the wood.
- Apply a protective sealant annually to extend the lifespan of your decking.
By following these steps, you can keep your wooden decking looking fresh and inviting all year round. Happy cleaning!
