Composite Deck

Due to their sturdiness, ease of maintenance, and aesthetic appeal, composite decks have grown in popularity. The longevity and beauty of your composite deck depend on frequent cleaning and sealing. This in-depth manual will explain you every step of cleaning and sealing your composite deck, enabling you to keep it immaculate for many years to come.

Looking for inexpensive composite decking? Learn about cheap composite decking solutions that don’t sacrifice quality. With our selection of inexpensive composite decking options, which have been designed to withstand the elements and provide a fashionable and durable outdoor environment, you can get the most for your money. With our affordable options for composite decking, you can improve your property.

Expert Guides On Cleaning And Sealing A Composite Deck

Section 1: Gathering Supplies

Gather the supplies you’ll need in advance to enable a quick and efficient cleaning and finishing process:

Safety Gear:

To shield yourself from any hazardous substances or debris, put on gloves, goggles for protection, and a mask.

Broom or Brush:

To clean the deck’s surface of fine dirt, debris, and leaves, use a broom or brush with firm bristles.

Composite Deck Cleaner:

Consider purchasing a cleaner designed specifically for composite decks. Since they can damage the deck’s surface, bleach and other corrosive agents should be avoided.


To mix the cleaning solution, you will need a bucket.

Hose or Power Washer:

Use a garden hose with a nozzle that sprays or a power washer at low pressure to help remove the cleaning agent.

Sealer or Stain:

Choose a high-quality composite deck sealer or stain that offers UV protection and water resistance.

Roller or Brush:

A roller or brush designed for deck applications will help apply the sealer evenly.

Drop Cloths or Plastic Sheets:

Protect nearby plants, furniture, and surfaces from any cleaning solution or sealer runoff.

Section 2: Cleaning Your Composite Deck

To get rid of the contaminants, stains, and fungus that might build up on the surface of your composite deck, proper cleaning is necessary. Take these actions:

Trim the Decks:

Remove all of the deck’s furniture, planters, and other accessories.

Sweep the Deck:

Remove leaves, debris, and loose dirt using a broom or brush.

Prepare the Cleaning Solution:

Follow the manufacturer’s instructions to mix the composite deck cleaner with water in a bucket. Typically, this involves diluting the cleaner with water in the recommended ratio.

Apply the Cleaning Solution:

Use a scrub brush or mop to apply the cleaning solution to the deck in tiny portions. To dissolve grime and stains, let the solution stay on the surface for the advised amount of time, often 10 to 15 minutes.

Allow to Dry:

Allow the deck to completely dry before starting the sealing process. Typically, depending on the weather, this takes 24 to 48 hours.

Composite Deck Cleaning Guide

Section 3: Sealing Your Composite Deck

Sealing your composite deck helps protect it from the elements, UV rays, and moisture, ensuring its longevity and vibrant color. Here’s how to do it:

Check the Weather:

Choose a day with clear skies and mild temperatures to ensure optimal conditions for sealing. Avoid applying sealer in direct sunlight or when rain is expected within 24 hours.

Prepare the Deck:

Ensure the deck is completely dry and free of debris before applying the sealer.

Stir the Sealer:

Thoroughly mix the composite deck sealer or stain using a stir stick.

Apply the Sealer:

Use a roller or brush to evenly apply the sealer to the deck’s surface. Start from one end and work your way towards an exit point to avoid stepping on the wet sealer. Apply a thin and even coat, following the manufacturer’s recommendations.

Pay Attention to Gaps and Edges:

Make sure to apply sealer to any gaps between deck boards, railings, and other hard-to-reach areas.

Wipe Excess Sealer:

After applying the sealer, use a clean cloth or rag to wipe off any excess sealer that may have pooled or dripped. This will prevent uneven drying and a sticky residue.

Allow Sealer to Dry:

Permit the sealant to dry according to the manufacturer’s directions. Depending on the humidity and weather, the exact time can change, but it typically takes anywhere from 24 to 48 hours.

Application to a Second Layer (optional):

For added protection, you might choose to apply a second layer by the sealer’s recommendations. Before continuing, make sure the initial application has dried fully.


Regular cleaning and sealing are crucial to maintaining the beauty and longevity of your composite deck. By following this expert guide, you can effectively clean away dirt and stains and apply a protective seal to keep your deck looking its best for years to come. Remember to refer to the manufacturer’s instructions for the specific cleaning solution and sealer you’re using, and enjoy your well-maintained composite deck with confidence.

Also, read this: 3 Unique Ideas for Your Next Home Remodel

By Author

Leave a Reply

Your email address will not be published. Required fields are marked *