How to Clean Trex Decking

Introduction

Trex decking is durable and low maintenance, but dirt, mildew, and debris can still build up over time. Cleaning it properly helps maintain its appearance while preventing premature wear. Using the right techniques ensures you won’t harm the composite boards.

What You'll Need

• Soft-bristle brush

• Mild dish soap

• Bucket of warm water

• Garden hose

• Optional: commercial composite deck cleaner

Steps

Remove all furniture, planters, and debris from the deck surface.
Rinse the entire deck with a garden hose to loosen dirt and grime.
Mix warm water with a small amount of dish soap in a bucket.
Scrub the deck boards using a soft-bristle brush, working with the grain.
Pay extra attention to areas with stains or mildew buildup.
Rinse thoroughly with clean water to wash away all soap and residue.
Allow the deck to air-dry completely before replacing furniture.

Alternative Methods

• Use a specialized composite deck cleaner for tougher stains.

• Apply white vinegar diluted with water to treat mold or mildew.

• Use a pressure washer only on a low setting and with care.

What NOT to Do

• Do not use bleach on Trex decking unless the manufacturer specifically approves it.

• Do not use metal brushes or abrasive tools that can scratch the surface.

• Do not use high-pressure washing, which may damage the boards.

FAQs

Can I use a pressure washer on Trex decking?

Yes, but only on a low-pressure setting and with caution. High pressure can damage the surface.

How often should I clean Trex decking?

Most decks only need cleaning one to two times per year, depending on climate and usage.

What removes mold from Trex decking?

A mixture of white vinegar and water or a composite-safe mold cleaner works well.

This article is for informational purposes only. Always follow manufacturer instructions and use proper safety precautions. You assume all risk for any actions you take based on this guide.

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