Trex® decking is known for its durability, beauty, and low-maintenance appeal—three things every homeowner can appreciate. Unlike traditional wood decks that require regular staining and sealing, Trex decking only needs periodic cleaning to stay in top shape. But even with its impressive weather resistance, dirt, pollen, mildew, and everyday messes can accumulate over time. Knowing how to properly clean your Trex deck helps protect your investment and ensures it looks great for years to come.
Below is a full step-by-step guide on how to clean Trex decking safely and effectively, including routine cleaning methods, stain removal tips, seasonal care, and when it’s okay to use a pressure washer.
Why Proper Cleaning Matters
Trex decking is made from a blend of recycled wood fibers and plastics, creating a strong, moisture-resistant material that stands up well to the Texas sun and unpredictable weather. However, outdoor living spaces inevitably collect debris: pollen settles, leaves decompose, dust blows in, pets track mud, and spills happen.
While Trex is incredibly resilient, routine care helps prevent:
-
Mold or mildew buildup
-
Long-term staining
-
Slick surfaces
-
Embedded dirt
-
Premature wear
The good news? Cleaning Trex decking is simple and doesn’t require harsh chemicals or specialized equipment.
Routine Cleaning (Ideal for Monthly or Seasonal Maintenance)
For general upkeep, the following supplies work perfectly:
-
Garden hose
-
Bucket of warm, soapy water (dish soap or mild detergent)
-
Soft-bristle brush or long-handled deck brush
Steps:
1. Remove Debris
Start by clearing away leaves, dirt, furniture, or décor. Use a broom or leaf blower to sweep away loose debris, especially from between deck boards.
2. Rinse Thoroughly
Use your hose to rinse the entire deck. This loosens dirt and helps prevent scratches during scrubbing.
3. Scrub with Soapy Water
Dip your brush into the warm, soapy mixture and scrub gently along the grain of the decking. Focus on high-traffic areas or spots where dirt collects.
4. Rinse Again
Finish by rinsing everything off thoroughly from top to bottom. Make sure all soap residue is removed to prevent film buildup.
This basic method is safe for all Trex products—both older composite styles and the newer, high-performance lines.
How to Handle Stubborn Stains
Even with Trex’s stain resistance, accidents can happen. The most common stains include:
-
Grease or cooking oil
-
Food and drink spills
-
Tree sap
-
Mud and clay
-
Sunscreen or lotions
For food or oil-based stains:
A composite-deck-approved cleaner is your best bet. Apply according to the product instructions, scrub gently, and rinse thoroughly.
For mold or mildew:
Use a cleaner containing sodium hypochlorite approved for composite decking. Avoid generic bleach mixtures—they may lighten the color or damage the material.
For ground-in dirt or clay:
Soapy water and a little extra scrubbing usually do the trick.
The faster you treat stains, the easier they are to remove.
Can You Power Wash Trex Decking? Yes—But With Care
Trex allows pressure washing, but ONLY when done correctly.
Safe guidelines:
-
Use a pressure washer up to 3100 PSI
-
Use a fan-tip nozzle
-
Keep the wand 8–12 inches from the surface
-
Spray WITH the grain, not against it
-
Do not use a rotary scrubber or turbo nozzle
Pressure washing is great for deep cleaning, but misuse can damage the board surface. If your deck is older, weathered, or heavily stained, hiring a professional is a smart choice.
Seasonal Cleaning Tips
Spring
Remove pollen buildup, rinse dust, and prepare for patio season.
Summer
Clean up after BBQ spills and check for mold in shaded areas.
Fall
Clear leaves quickly—they can leave tannin stains.
Winter (if needed)
Avoid using metal shovels; instead, use a plastic shovel to prevent scratches.
When to Call a Professional
If you’re dealing with:
-
Stubborn stains
-
Mold growth
-
Large decks
-
Heavy buildup
Sagamore Fence & Deck can safely deep-clean your composite deck without damaging the surface. Contact us for a quote today!
Final Thoughts
Learning how to clean Trex decking is simple—and with regular care, your deck will look beautiful for decades. Whether you prefer DIY maintenance or want professional help, Sagamore Fence & Deck is here to guide you.
