Decking,railing, and some greenery

How to Clean a Composite Deck: A Comprehensive Guide


The time has come once again to embrace the beautiful outdoor days ahead! This year, let's start off on the right foot by getting our decks ready for the season. Whether you're planning a casual spring dinner party or looking forward to some much-needed relaxation after work, a clean and welcoming deck is the perfect setting. Let’s clean up and set the stage for good times and relaxation in the great outdoors. Get ready to enjoy your personal slice of paradise right at home!

1. Clear the Deck

Before you start cleaning, prepare your deck space:

  • Remove Furniture and Decor: Take off tables, chairs, potted plants, and any other items on your deck. This ensures you can access every corner.
  • Inspect furniture for any debris or dirt that might scratch the deck surface.
  • Sweep Away Debris: Use a broom or leaf blower to remove loose dirt, leaves, and branches. Pay attention to crevices, corners, and gaps between boards.
  • Protect Nearby Plants: Cover nearby plants, flowers, or deck decorations to shield them during the cleaning process.

2. Gather Your Cleaning Tools and Materials

To get your deck ready, assemble the necessary items:

  • Composite Deck Cleaner: Choose a cleaner recommended by your deck manufacturer. Different materials (capped, uncapped, or PVC) may require specific cleaners. Follow the guidelines provided by the manufacturer.
  • Other Tools: 5-Gallon Bucket, Spray Bottle, Measuring Cup, Broom or Leaf Blower, Terry Cloth Towels or Sponges, Deck Brush.

3. Scrub Your Composite Deck

Now let’s roll up our sleeves and get to work:

  • Mix the Cleaning Solution: Follow the manufacturer’s instructions to create the cleaning solution. Typically, you’ll mix the cleaner with water in your 5-gallon bucket.
  • Apply the Solution: Spray the entire deck surface thoroughly with the cleaning solution. Make sure to cover all boards, railings, and steps.
  • Scrub Gently: Use your deck brush to scrub the boards. The bristles should be appropriate for your deck material (nylon for composite, natural fiber for PVC). Pay extra attention to high-traffic areas and spots with stains.

4. Rinse Thoroughly

After the scrubbing session, it’s time to rinse off the cleaner:

  • Hose It Down: Use a garden hose with a pressure nozzle to rinse off the cleaning solution. Start from one end of the deck and work your way across. Ensure all residue is washed away.
  • Check for Stubborn Areas: If you notice any stubborn stains or spots, use the spray bottle to spot-treat those areas. Scrub gently with the deck brush to remove lingering grime.
  • Dry Off Standing Water: Use terry cloth towels, sponges, or a sponge mop to remove any standing water. Proper drying prevents water spots and mold growth.

5. Final Touches

Admire your sparkling clean deck! Here are some additional tips:

  • TimberTech Tip: Regular cleaning ensures your composite deck remains beautiful and ready for all your outdoor gatherings. Enjoy the upcoming “Deck Season” to the fullest!
  • Remember, a little maintenance goes a long way, and your composite deck will reward you with years of enjoyment. Happy decking!

Disclaimer: Always follow safety precautions and manufacturer instructions when cleaning your deck.

Need an Installer? Randall Pros can help! Click Here to check out our extensive list of installers and choose the one that best fits your project!
partners image with multiple industry logos