How to Clean and Maintain Composite Decking

Maintaining composite decking ensures its durability, safety, and visual appeal over many years. Here’s an original, comprehensive guide tailored to maximising the lifespan of composite decks in Australia’s challenging climate.

Why Maintain Composite Decking

Composite decking is favoured for its resistance to rot and minimal upkeep needs, but it still demands periodic attention. Dirt, grime, and environmental factors may impact its performance if neglected, potentially leading to surface stains or mould.

Recommended Cleaning Schedule

Weekly: Sweep away debris like leaves and dust using a broom or blower to keep gaps clear and promote airflow.

Monthly: Wash down with a garden hose to remove fine particles.

Every 3 Months: Conduct a thorough clean using a gentle soap or approved composite decking cleaner as needed.

Spot Clean: Address any stains, spills, or signs of mould promptly to prevent them from setting in.

Step-by-Step Cleaning Method

Remove Surface Debris

Clearing the deck with a soft broom or leaf blower prevents organic matter from decomposing between boards, a common trigger for mould and water retention.

Wash Gently

Mix warm water with mild dish detergent, scrubbing gently with a soft brush or microfibre mop. Harsh chemicals like bleach should be avoided as they may degrade composite materials.

Tackle Stubborn Spots

For tougher marks, utilise a cleaner made specifically for composite decking. Always follow the product instructions and rinse off thoroughly to avoid residue.

Oil/Grease: Treat spills quickly with soapy water.

Mould/Mildew: Use a mix of equal parts vinegar and water, or select a composite-safe mould remover.

Metal/Rust: Apply a baking soda paste or gentle cleanser, then rinse well.

Rinse Completely

After scrubbing, rinse the surface with a garden hose. Avoid pressure washers or high-pressure attachments, as they can compromise the deck’s finish.

Extra Maintenance Tips

Prevent Scratches: Fit furniture pads under heavy objects and relocate furniture by lifting, not dragging.

Promote Drainage: Make sure spaces between deck boards remain free of debris, allowing water to flow off and discouraging mould formation.

Minimise Heat Damage: Refrain from placing rugs or mats in direct sunlight, as excessive heat can affect some composite surfaces.

Inspect Regularly: Periodically check for loose fittings, cracked boards, or other issues and carry out repairs early to prevent worsening damage.

Summary

Routine cleaning and observant care keep composite decks sturdy and attractive, creating a welcoming space for years of use. With basic cleaning habits and honest attention to wear or weathering, homeowners can enjoy lasting results.

For those seeking robust composite decking and reliable installation, professional assistance is available to help select and fit the right materials for unique outdoor spaces.