How to Maintain Composite Decking and Cladding in the UK Climate

Composite decking and cladding have revolutionised outdoor living spaces in the UK. Known for their durability, low maintenance, and aesthetic appeal, they offer homeowners the perfect balance of beauty and resilience. However, the UK's unpredictable weather, from rainy days to icy winters, calls for specific care strategies to maintain these materials. Below is a comprehensive guide to help you care for your composite decking and composite slatted cladding, ensuring their longevity and visual appeal. 

Understanding Composite Decking and Its Benefits 

Composite decking is crafted from a blend of wood fibres and plastic, making it resistant to common issues like rot, insect damage, and warping. This unique construction ensures that composite decking is both eco-friendly and capable of withstanding the UK’s varying climate conditions. Similarly, composite slatted cladding offers an elegant and weather-resistant facade solution for homes and buildings. 

Both materials share one key feature: they are designed to require minimal maintenance, but regular upkeep is still essential. 

Regular Cleaning: The Cornerstone of Maintenance 

Routine cleaning is essential to prevent dirt, grime, and organic debris from accumulating on composite decking and cladding. These steps will ensure your surfaces remain clean and free from damage:

Use a soft-bristle broom to remove loose dirt, leaves, and debris from the surface. This practice prevents the buildup of organic matter, which can trap moisture and encourage mould or mildew growth. 

A simple solution of warm water and mild soap is adequate for most cleaning needs. Use a soft-bristle brush to scrub the surface gently, following the grain pattern of the material. Rinse thoroughly with a garden hose to remove soap residue. 

During wetter months, composite decking and cladding may require more frequent cleaning to combat moss or algae growth. A biodegradable deck cleaner can be used for tougher stains, ensuring it is safe for composite materials. 

Protecting Against Mould and Mildew 

Mould and mildew are common issues in the UK’s damp climate, especially during autumn and winter. To keep these growths at bay: 

Ensure adequate airflow around and beneath your composite decking. This helps moisture evaporate quickly, reducing the likelihood of mould growth. 

Remove leaves and organic debris from decking and cladding surfaces promptly, as these can retain moisture. 

If mould does appear, treat it with a composite-safe mould cleaner. Avoid using abrasive tools or harsh chemicals that could damage the surface. 

Seasonal Maintenance Tips 

 Autumn and Winter 

Regularly remove fallen leaves and debris to prevent moisture accumulation. 

During heavy snowfall, use a plastic shovel to clear the surface. Avoid metal shovels or sharp tools, as they can scratch the composite material. 

Instead of salt, which can damage composite surfaces, use sand to provide traction on icy decking.

Spring and Summer 

After the winter months, give your decking and cladding a deep clean to remove any lingering dirt or stains. 

Use a grill mat under your barbecue to protect your decking from grease and food stains. Clean any spills immediately to prevent staining. 

Stain Removal Strategies 

Composite decking and slatted cladding are resistant to staining, but accidental spills from oil, wine, or grease should be handled quickly: 

Use a clean cloth to blot spills immediately. 

Wash the area with warm, soapy water and a soft brush. A composite-specific cleaner may be necessary for tougher stains. 

Please do not use bleach or abrasive cleaners, as they can damage the material. 

Preventing Fading and UV Damage 

Composite materials are designed to resist UV damage, but prolonged exposure to direct sunlight can lead to gradual fading. Protect your decking and cladding by: 

Ensuring Proper Drainage 

Proper drainage is crucial for maintaining composite decking and cladding. Without it, water can pool and lead to mould or mildew problems: 

Ensure there are sufficient gaps between decking boards to allow water to drain freely. 

For composite slatted cladding, ensure the installation provides proper ventilation and allows water to run off efficiently.  

Avoiding Scratches and Surface Damage 

While composite materials are durable, they are not immune to scratches or damage: 

Use protective pads under furniture legs and avoid dragging items across the surface. 

When moving heavy objects, lift them rather than dragging them across the decking. 

Composite Fencing Care 

If you have composite fencing alongside your decking and cladding, similar maintenance principles apply: 

Use warm, soapy water and a soft brush to remove dirt and stains. 

Check for cracks or loose panels and address them promptly. 

Trim back plants or shrubs near composite fencing to avoid damage from overgrowth. 

Inspections and Repairs 

Routine inspections are vital to catch potential issues early: 

Look for cracks, warping, or loose boards. 

Ensure all fasteners are secure and replace any damaged hardware. 

Address any damage immediately to prevent further deterioration. 

Sustainable and Long-Lasting Solutions with BuildersMerchant 

BuildersMerchant offers a range of premium composite decking, cladding, and fencing products designed for the UK’s climate. With their durable and eco-friendly options, maintaining your outdoor spaces has never been easier. Whether you’re looking to refresh your current setup or invest in new installations, BuildersMerchant provides everything you need.