Composite Deck Maintenance Tips: Deck Care & Cleaning Guide

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Composite decks are a beautiful addition to any home, whether you are in Illinois or Georgia. One of the reasons why people choose composite decks over wood decks is their low maintenance. Even though they require little maintenance, it is still important to care for them properly to preserve their long life. Here are a few tips to help you keep your composite deck looking new.
Royal Deck Composite Deck Care And Maintenance

1. Cleaning Products

The first tip is to read the manufacturer’s instructions and only use approved cleaning products. Every manufacturer uses different materials and techniques to create their deck material. This means you must make sure to only use cleaning products that are listed specifically by the manufacturer. It is generally recommended that you never use acetone or other solvents on your composite decking.

2. Dirt and Debris

Dirt and debris might not seem like they are that important, but they can begin to decompose, produce tannins, and leave stains. You should always try to sweep the dirt and debris away with a soft broom. You can also spray them off with a garden hose and warm, soapy water. You can use a soft brush to remove any that are stubborn.

3. Pressure Washer

You can use a pressure washer to clean your composite deck, but it should be set low, preferably below 1300 PSI. You should hold the tip no closer than 12 inches. You can remove any tough dirt with a soft scrub brush and soapy water.

4. Hard Water Stains

If you live in an area that has high amounts of minerals in the water, such as calcium, lime, and silica, it can leave behind unsightly spots when it dries. These can easily be cleaned with white vinegar, followed by a careful rinse afterward. These spots do not harm the decking, but you might want to remove them to keep it looking its best.

5. Ice and Snow

When removing ice and snow, it is important not to use a metal shovel. This can damage the surface and allow ice and water to penetrate the material. You should always use a plastic shovel or calcium chloride to remove snow and ice.

6. Food and Oils

If you use your deck for dining, you might have the occasional food, grease, or oil spill. They should be removed as quickly as possible because they can leave permanent stains. This can void your warranty and ruin the look of your deck. You should always remove food or oil using a soft-bristle brush and dishwashing detergent or another degreaser.

7. Mold and Mildew

Most composite decks are mold and mildew-resistant. If you allow dirt and pollen to remain on the deck, mold and mildew can begin to form on them and eventually stain your deck. It can be removed using warm soapy water and a soft brush.

Following these tips will help you keep your deck looking new and will help you meet the requirements of keeping your warranty intact. Royal Deck serves homeowners across Illinois and Georgia. We have a long list of happy customers and are a trusted builder in both states. We are a family-owned business and care about the quality of the services we provide. If you would like to talk about a composite deck, contact us, and one of our team members will be happy to discuss your plans.

Frequently Asked Questions

How often should you do a full cleaning of your composite deck?

Most manufacturers recommend a thorough cleaning at least twice a year, ideally in spring and fall. A quick sweep once a week is enough to stay on top of everyday dirt and debris in between full cleanings. The more consistently you sweep, the easier the deep clean will be.

Can metal outdoor furniture leave stains on a composite deck?

Yes, older metal furniture can leave rust stains on the surface over time. The easiest fix is to add vinyl or plastic caps to the bottom of the furniture legs to prevent contact staining. If rust marks are already present, a deck cleaner containing oxalic acid is an effective and safe solution for composite surfaces.

Is it safe to use a pressure washer on composite decking?

Yes, but with caution. Keep the PSI below 1,300 and hold the nozzle at least 12 inches from the surface at all times. Always move the nozzle steadily in the direction of the board grain and avoid holding it in one spot, as concentrated pressure can damage the surface.

How should you prepare your composite deck for winter?

Before temperatures drop, give your deck a thorough cleaning and clear all debris from the gaps between boards. Remove any furniture or items that could trap moisture on the surface. This simple routine protects the substructure under your deck from freeze-thaw damage and ensures your deck is ready to enjoy as soon as spring arrives.