Using a pressure washer on a deck can be beneficial but poses significant risks if not done correctly. High pressure can damage both timber and composite materials, potentially stripping away protective coatings, leading to rot and splintering. It's particularly dangerous for old or untreated wood, and weather conditions can exacerbate issues. Experts advise instead on cautious use to maintain deck longevity, emphasizing when to avoid pressure washing, especially with loose boards and in harsh weather conditions.
You can use a pressure washer on decking, but you need to be careful. High pressure can strip away protective coatings, leaving the wood exposed and vulnerable to water damage.
Composite decks are generally more resistant, but even they can lose their shine or show visible streaks if the pressure's too high. It's best to avoid pressure washing during extreme weather.
If the wood is old or untreated, you're risking causing more damage while using a pressure washer. Loose boards also present risks.
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