Composite decking is built to last, but even the most durable decks need a little maintenance. If you’re wondering how to clean composite decking without causing damage, this guide covers the basics.
With just a few tools and some routine care, your deck can stay looking great all year long.
Regular Cleaning Basics
Sweep often
Use a broom or blower to clear away leaves, dirt, and debris. Regular sweeping prevents buildup that can cause stains or mold.
Rinse with water
A garden hose is usually enough for light cleaning. Spray off dust, pollen, and light spills.
What You’ll Need for a Deeper Clean
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Mild soap or composite deck cleaner
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Soft-bristle brush or broom
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Bucket of warm water
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Garden hose or pressure washer (low setting only)
Step-by-Step: How to Clean Composite Decking
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Remove furniture and sweep debris
Get a clean surface to work with by clearing off furniture, planters, and loose debris.
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Mix soap and water
Use a bucket of warm water and mild dish soap or a composite-safe cleaner.
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Scrub gently
Use a soft-bristle brush to scrub along the grain of the boards. Avoid wire brushes, which can damage the surface.
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Rinse thoroughly
Use a hose or pressure washer on a low setting. Make sure to rinse away all soap to prevent film or residue.
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Let it dry
Allow your deck to air dry completely before replacing furniture.
Avoid These Common Mistakes
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Don’t use bleach or harsh chemicals
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Don’t use a high-pressure setting (it can damage the boards)
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Don’t ignore mold or mildew - treat it early with a composite-safe cleaner
Keep Your Deck Looking Its Best
Cleaning composite decking isn’t complicated - it just takes a little time and care. Whether your deck is a small backyard space or part of a larger outdoor living area, regular maintenance helps protect your investment.
Need help with deck maintenance or planning a new composite deck?
Naperville Roofing & Construction is here to help. Contact us today for expert advice or a quote on your next project.
