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How To Clean Stains Off Trex Decking How To Clean Stains Off Trex Decking

Outdoor Furniture

How To Clean Stains Off Trex Decking

Written by: Amelia Brooks

Learn how to effectively remove stains from your Trex decking and restore its original beauty. Keep your outdoor furniture looking pristine with these easy cleaning tips.

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Welcome to our guide on how to clean stains off Trex decking! Trex decking is a popular choice for outdoor spaces due to its durability and low maintenance requirements. However, over time, your Trex deck may develop stains from various sources such as dirt, mildew, food spills, and even bird droppings. While these stains can be unsightly, the good news is that with the right equipment and techniques, you can easily restore the beauty of your Trex decking.

In this article, we will provide you with a comprehensive step-by-step guide on how to effectively remove stains from your Trex deck. We’ll also share valuable tips on general maintenance to keep your deck looking great year-round. So let’s get started!

Key Takeaways:

  • Easily remove stains from your Trex decking using simple tools like a broom, garden hose, and mild detergent. Regular maintenance will keep your outdoor space looking beautiful and inviting for years to come.
  • Protect your Trex deck from stains by promptly addressing spills, using protective mats under hot objects, and regularly inspecting for damage. With the right care, your deck will stay stunning and durable.

Equipment Needed

Before we dive into the cleaning process, let’s first gather the necessary equipment to ensure that you have everything you need to effectively clean your Trex decking:

  • Broom or brush: You’ll need a broom or brush with stiff bristles to remove loose debris and dirt from the deck surface.
  • Garden hose or pressure washer: A garden hose with a spray nozzle attachment can be used to rinse off the deck. Alternatively, a pressure washer can be used for more stubborn stains, but be sure to use it on a low pressure setting to avoid damaging the deck surface.
  • Mild detergent or specialized deck cleaner: Depending on the type of stain, you may need a mild detergent or a specialized deck cleaner. Make sure to choose a cleaner that is specifically formulated for use on composite or PVC decking, such as a non-bleach cleaner. Avoid using harsh chemicals, bleach, or abrasive cleaners as they can damage the deck.
  • Soft-bristle brush or sponge: For gentle scrubbing, you’ll need a soft-bristle brush or sponge. This will help loosen and remove the stains without causing any damage to the deck surface.
  • Rubber gloves and eye protection: To protect your hands and eyes during the cleaning process, it’s recommended to wear rubber gloves and eye protection.
  • Plastic sheet or tarp: Depending on the location of your deck, you may want to cover any nearby plants or furniture with a plastic sheet or tarp to prevent any cleaning solutions from accidentally contacting them.
  • Bucket or spray bottle: You’ll need a bucket or spray bottle to mix and apply the cleaning solution. This will allow you to evenly distribute the solution across the deck surface.

By gathering these essential tools and supplies, you’ll be fully equipped to tackle any stains that may appear on your Trex decking.

Preparing the Deck

Before you start cleaning the stains off your Trex decking, it’s important to take the necessary precautions and properly prepare the deck for the cleaning process. Follow these steps to ensure a successful cleaning:

  1. Clear the deck: Remove any furniture, plants, or other objects from the deck surface. This will give you ample space to work and prevent any obstacles during the cleaning process.
  2. Sweep or brush: Use a broom or brush with stiff bristles to remove any loose debris, such as leaves, dirt, or twigs, from the deck surface. Pay extra attention to crevices and corners where debris may accumulate.
  3. Protect nearby areas: If your deck is located near plants, furniture, or other sensitive areas, cover them with a plastic sheet or tarp to prevent any cleaning solutions from accidentally coming into contact with them.
  4. Wet the deck: Before applying any cleaning solution, wet the deck surface with water using a garden hose or a spray nozzle attachment. This will help loosen surface dirt and make the stains easier to remove.

By properly preparing your Trex deck, you’ll ensure that the cleaning process is more efficient and effective. Now that you’ve prepped the deck, it’s time to move on to removing those stubborn stains!

To clean stains off Trex decking, use a mild soap and water solution with a soft bristle brush. For tougher stains, use a composite deck cleaner and follow the manufacturer’s instructions. Avoid using harsh chemicals or pressure washers to prevent damage to the decking.

Removing Stains

Now that your Trex deck is prepped and ready, it’s time to tackle those stubborn stains. Follow these steps to remove different types of stains from your decking:

  1. Dirt and debris: If your deck is mainly covered in dirt and debris, start by giving it a thorough rinse with a garden hose or pressure washer on a low pressure setting. This will help remove the loose dirt and prepare the surface for further cleaning.
  2. Food and beverage stains: For food and beverage stains, mix a solution of mild detergent or specialized deck cleaner with warm water in a bucket or spray bottle according to the manufacturer’s instructions. Apply the solution to the stained areas and gently scrub with a soft-bristle brush or sponge. Rinse thoroughly with water to remove any residue.
  3. Mildew and mold: To remove mildew and mold stains, you’ll need a cleaner specifically formulated for this purpose. Follow the manufacturer’s instructions to apply the cleaner to the affected areas. Allow the cleaner to sit for the recommended amount of time to penetrate the stains. Then, use a soft-bristle brush or sponge to gently scrub the stains. Rinse thoroughly with water.
  4. Oil and grease: Oil and grease stains can be more challenging to remove. Begin by using a soft cloth or paper towel to blot up any excess oil or grease. Then, apply a commercial degreaser or a mixture of warm water and dish soap to the stains. Use a soft-bristle brush to scrub the stains gently. Rinse thoroughly with water.
  5. Rust stains: Rust stains can be eliminated using a specialized rust stain remover. Follow the product instructions carefully and apply the remover to the affected areas. Allow it to sit for the recommended amount of time and then scrub gently with a soft-bristle brush. Rinse thoroughly with water.

After treating the stains, rinse the entire deck thoroughly with water to remove any remaining cleaning solution. Allow the deck to dry completely before replacing furniture or walking on it. With proper stain removal techniques, your Trex decking will look brand new!

General Maintenance

Maintaining your Trex decking goes beyond just removing stains. Regular upkeep and preventive measures will help extend the life and beauty of your outdoor space. Here are some general maintenance tips to keep your Trex deck looking great:

  1. Sweep regularly: Sweep your deck regularly to remove dirt, leaves, and other debris. This will prevent these particles from accumulating and potentially causing stains or damage to the deck surface.
  2. Wash with mild detergent: Periodically wash your deck with a mild detergent or specialized deck cleaner to remove accumulated dirt and grime. Follow the manufacturer’s instructions and rinse thoroughly with water after cleaning.
  3. Avoid sharp objects: Be cautious when using sharp objects, such as shovels or metal furniture, on your Trex deck as they can cause scratches or gouges. Use protective pads under furniture legs and avoid dragging heavy objects across the deck surface.
  4. Protect from heat: While Trex decking is heat-resistant, it’s best to use protective mats or coasters under hot objects, such as grills or fire pits, to prevent any discoloration or damage to the deck.
  5. Address spills promptly: If any spills occur on your deck, clean them up promptly to prevent staining. Use a mild detergent and water to clean the area and rinse thoroughly.
  6. Trim nearby plants: Trim back any overhanging branches or plants near your deck to prevent debris, leaves, or sap from falling onto the deck surface and causing stains.
  7. Inspect for damage: Regularly inspect your Trex deck for any signs of damage, such as loose boards, cracks, or splintering. If you notice any issues, address them promptly to prevent further damage and ensure the safety of your deck.
  8. Apply protective coating: Depending on the type of Trex decking you have, applying a protective coating or sealer may be recommended. Check the manufacturer’s guidelines to determine if this is necessary for your specific deck.

By following these maintenance tips, you can enjoy a beautiful and well-maintained Trex deck for years to come.


Cleaning stains off your Trex decking doesn’t have to be a daunting task. With the right equipment, techniques, and regular maintenance, you can easily keep your deck looking beautiful and stain-free.

In this guide, we discussed the necessary equipment needed, the importance of preparing the deck before cleaning, and how to effectively remove different types of stains. We also provided general maintenance tips to help you maintain the beauty and longevity of your Trex deck.

Remember, it’s essential to use the appropriate cleaning products and techniques specifically designed for composite or PVC decking to avoid damaging the deck surface. Always follow the manufacturer’s instructions and consider testing any new cleaning solution on a small, inconspicuous area before applying it to the entire deck.

By incorporating regular cleaning and maintenance practices into your routine, you can ensure that your Trex deck remains a welcoming and enjoyable outdoor space for years to come.

So, don’t let those pesky stains diminish the beauty of your Trex decking. Take action and restore its original splendor today!

Frequently Asked Questions about How To Clean Stains Off Trex Decking

What are the common types of stains on Trex decking?

Common types of stains on Trex decking include food and beverage spills, grease and oil stains, mold and mildew, and rust stains from metal furniture or accessories.
How can I remove food and beverage stains from Trex decking?

To remove food and beverage stains from Trex decking, you can use a mild soap and water solution along with a soft bristle brush. Gently scrub the stained area and rinse thoroughly with water.
What is the best way to clean grease and oil stains off Trex decking?

For grease and oil stains, you can use a degreaser specifically designed for composite decking. Apply the degreaser to the stained area, let it sit for a few minutes, then scrub with a brush and rinse with water.
How do I get rid of mold and mildew on my Trex decking?

To remove mold and mildew, you can use a composite deck cleaner that is specifically formulated to tackle these types of stains. Apply the cleaner to the affected area, scrub gently, and rinse thoroughly.
Can I use bleach to remove rust stains from my Trex decking?

It is not recommended to use bleach on Trex decking as it can cause discoloration. Instead, you can use a rust stain remover that is safe for use on composite materials. Apply the remover as directed, scrub the stained area, and rinse well with water.

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