Pressure washing is considered safe for cleaning decks as long as the correct techniques and pressure settings are used. To prevent damage such as splintering, etching, or fiber delamination, it is important to use professional-grade equipment calibrated to specific low-pressure levels based on the deck material.
Recommended safety guidelines include:
- For Cedar or Wood decks: Use a lower pressure setting between 500 and 1000 PSI to avoid splintering the wood grain.
- For Composite decks: Use a pressure setting between 1200 and 1500 PSI to effectively clean the surface without causing damage.
- Proper technique: Maintain a distance of at least 6 inches between the nozzle and the deck surface and use wide, sweeping motions.
While high-pressure washing can damage wood, professional services use controlled, low-pressure methods and eco-friendly cleaning solutions to safely remove grime, mold, and mildew. This approach helps maintain the structural integrity of the deck while reducing slip hazards.
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