composite deck cleaning
  • Decking

How To Clean Composite Decking In 5 Simple Steps

Composite decking has become increasingly popular among homeowners due to its durability, low maintenance, and aesthetic appeal. However, while it requires less upkeep than traditional wood decking, it still needs to be cleaned regularly to maintain its look and longevity.

This cleaning guide will walk you through everything you need to know about:

  • How to clean composite decking
  • Why it’s important
  • Mistakes to avoid

Why Composite Decking Needs Cleaning

composite deck cleaning

Your deck is designed to be outdoors, right? Does it really need cleaning? Take it from you local deck professionals; the answer is a definitive yes! Here are some of the reasons why:

  • Longevity and Appearance: Even though composite decking is designed to withstand the elements, dirt, mold, and mildew can accumulate over time. Regular cleaning ensures that your deck remains visually appealing and structurally sound.
  • Safety: A clean deck is a safe deck. Mold and mildew can make the surface slippery, posing a hazard to you and your family.
  • Manufacturer’s Recommendations: Most composite decking manufacturers suggest periodic cleaning to keep your deck in the best possible shape. Ignoring these recommendations could void your warranty.

Tools and Materials You Will Need

Before you begin, gather the following tools and materials:

  • Broom or Leaf Blower: To remove loose debris like leaves and dirt.
  • Garden Hose: For rinsing off the deck.
  • Bucket of Warm Water: To mix with your cleaning solution.
  • Composite Deck Cleaner: A cleaner specifically designed for composite decking.
  • Soft-Bristled Brush: To scrub the deck without damaging it.
  • Pressure Washer (Optional): For a deeper clean.

Preparing Your Deck for Cleaning

Preparation is the key to success! Here’s how to prep your deck for cleaning:

Remove Furniture and Items

Clear your deck of all furniture, plants, and other items. This will give you a clean slate to work on and ensure that you don’t miss any spots.

Sweep the Deck

Use a broom or leaf blower to remove loose dirt and debris. This makes the cleaning process more effective and prevents scratching the deck surface.

Inspect the Deck

Look for any stains, mold, or mildew. Identifying these areas beforehand will allow you to focus your cleaning efforts where they are needed most.

Choosing the Right Cleaning Solution

Your cleaning solution can make or break your composite decking. Here are some things to look for in a cleaner:

Commercial Deck Cleaners

Many companies produce cleaners specifically designed for composite decking. These are usually the safest and most effective options.

Homemade Solutions

If you prefer a DIY approach, a mixture of warm water and mild dish soap can also do the trick. For stubborn stains, you can add a cup of white vinegar to your solution.

Cleaning Your Composite Deck: 5 Steps

composite deck cleaning

Let’s get down to business! Follow these steps for a safe and thorough cleaning.

Step 1: Wet the Deck

Use your garden hose to wet the entire deck. This helps to loosen dirt and makes the cleaning solution more effective.

Step 2: Apply the Cleaner

Spray or pour your chosen cleaner onto the deck. Be sure to follow the manufacturer’s instructions for the correct dilution and application method.

Step 3: Scrub the Deck

Use your soft-bristled brush to scrub the deck gently. Pay special attention to areas with stains, mold, or mildew.

Step 4: Rinse Thoroughly

Rinse the deck thoroughly with your garden hose, ensuring that all cleaning solution and loosened dirt are washed away.

Step 5 (Optional): Use a Pressure Washer

If your deck is particularly dirty or stained, you may choose to use a pressure washer. Be sure to use a low-pressure setting to avoid damaging the composite material.

Dealing with Stubborn Stains

Your deck still looking less than it’s best after a standard cleaning? Here are some tips to get rid of those stains that just won’t go away.

  • Grease and Oil Stains: For grease and oil stains, a degreaser can be very effective. Apply it directly to the stain, scrub lightly, and rinse thoroughly.
  • Mold and Mildew: For mold and mildew, a mixture of one part bleach to three parts water can be used. Apply the solution to the affected area, scrub gently, and rinse well.
  • Rust Stains: Rust stains can be treated with a cleaner containing oxalic acid. Follow the instructions on the product for best results.

Maintenance Tips to Keep Your Deck Clean

Want to extend the time between deck cleans? Follow these simple maintenance tips.

  • Regular Sweeping: Sweep your deck regularly to prevent the buildup of dirt and debris.
  • Seasonal Deep Cleaning: Plan to give your deck a deep clean at least twice a year—once in the spring and once in the fall.
  • Prompt Spill Cleanup: Clean up spills as soon as they happen to prevent staining.
  • Avoiding Harmful Cleaners: Avoid cleaners that contain harsh chemicals, as these can damage the composite material.

Winter Care for Composite Decking

Your deck can take it’s harshest beating in winter. You can keep composite decks looking their best all year round by taking these precautions:

Removing Snow and Ice

Use a plastic shovel to remove snow and ice from your deck. Avoid metal shovels, as they can scratch the surface.

Preventing Ice Build-Up

To prevent ice build-up, you can use rock salt or calcium chloride. Be sure to rinse the deck thoroughly once the ice has melted.

Common Mistakes to Avoid

Composite decking is pretty sturdy, but the wrong cleaning methods can cause permanent damage that you don’t want.

❌ Using Metal Brushes

Metal brushes can scratch and damage the surface of your composite decking. Always use a soft-bristled brush.

❌ Ignoring Manufacturer’s Instructions

Always follow the cleaning and maintenance instructions provided by the manufacturer of your composite decking.

❌ Using High-Pressure Washers Incorrectly

If using a pressure washer, make sure to use a low-pressure setting to avoid damage.

Learn More About Caring For Your Composite Materials

Cleaning composite decking doesn’t have to be a daunting task. With the right tools, materials, and techniques, you can keep your deck looking beautiful and lasting for years to come. Regular maintenance not only enhances the appearance of your deck but also ensures its longevity and safety.

Ready to get started? Give your composite deck the care it deserves by following this guide. If you have any questions or need professional assistance, don’t hesitate to reach out to our team of experts at Voyager Exteriors.

Check Out Our Recent Blog Posts

get the knowledge you need to start your home's transformation

Mother and Son Playing

Transforming Twin Cities Homes

The Voyager family can’t wait to help yours!

Get In Touch
Share to...