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Composite Decking Boards & Kits

Upgrade your outdoor space with high-quality composite decking boards and kits, designed for durability, low maintenance, and long-lasting style. Our range of composite decking combines the natural look of timber with advanced weather-resistant materials, making it ideal for gardens, patios, balconies, and commercial spaces. Whether you're planning a full decking installation or replacing existing boards, you'll find reliable, slip-resistant options in a variety of colours and finishes to suit any project.

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Composite decking is a modern alternative to traditional timber, offering superior resistance to rot, moisture, and fading. Unlike wood decking, it doesn’t require regular staining, sealing, or painting, saving you time and ongoing maintenance costs. Our composite decking boards are manufactured using a blend of recycled wood fibres and plastic, creating an eco-friendly solution that delivers both strength and visual appeal.

Choose from a wide selection of decking boards, starter kits, and complete systems designed for easy installation. Many of our kits include everything you need to get started, including fixings and accessories, making them ideal for both DIY enthusiasts and professional installers. With options available in different lengths, colours, and textures, you can create anything from a sleek contemporary deck to a more traditional outdoor living area.

Safety and performance are key benefits of composite decking. The boards are designed with anti-slip surfaces, making them suitable for use in all weather conditions, including wet environments. They are also resistant to splintering and cracking, providing a safer surface for families, pets, and high-traffic areas.

Our composite decking products are built to withstand the UK climate, offering excellent UV resistance to maintain their colour over time. Whether you're enhancing a residential garden or working on a larger landscaping project, composite decking provides a long-term solution that combines aesthetics with practicality.

Browse our full range of composite decking boards and kits to find the perfect solution for your outdoor project. With competitive pricing, dependable quality, and a variety of styles available, it’s never been easier to transform your space into a stylish and functional outdoor area.

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Showing 1 - 48 of 52 products
Showing 1 - 48 of 52 products

Durable 3.6m Black composite decking boards with a sleek, low-maintenance finish, ideal for modern outdoor spaces.

Durable 3.6m Black composite decking boards with a sleek, low-maintenance finish, ideal for modern outdoor spaces.

Durable Ash White composite end board (3.6m) for a clean, low-maintenance decking finish.

Durable Ash White composite end board (3.6m) for a clean, low-maintenance decking finish.

Durable Black composite end board (3.6m) for a clean, low-maintenance decking finish.

Durable Black composite end board (3.6m) for a clean, low-maintenance decking finish.

Ash White composite L trim (3.6m) for neat, durable edging and corner finishing on decking and cladding.

Ash White composite L trim (3.6m) for neat, durable edging and corner finishing on decking and cladding.

Fixing clip for WPC Composite Decking. We recommend using 15 clips per 5m Deck Board

Fixing clip for WPC Composite Decking. We recommend using 15 clips per 5m Deck Board

Fixing clip for WPC Composite Decking. We recommend using 15 clips per 5m Deck Board

Fixing clip for WPC Composite Decking. We recommend using 15 clips per 5m Deck Board

Starting clip for WPC Composite Decking

Starting clip for WPC Composite Decking

Durable Triton dual-sided hollow composite decking with reversible woodgrain and grooved finish, offering a low-maintenance, weather-resistant solution for modern outdoor spaces.

Durable Triton dual-sided hollow composite decking with reversible woodgrain and grooved finish, offering a low-maintenance, weather-resistant solution for modern outdoor spaces.

Durable Triton dual-sided hollow composite decking with reversible woodgrain and grooved finish, offering a low-maintenance, weather-resistant solution for modern outdoor spaces.

Durable Triton dual-sided hollow composite decking with reversible woodgrain and grooved finish, offering a low-maintenance, weather-resistant solution for modern outdoor spaces.

Durable Triton dual-sided hollow composite decking with reversible woodgrain and grooved finish, offering a low-maintenance, weather-resistant solution for modern outdoor spaces.

Durable Triton dual-sided hollow composite decking with reversible woodgrain and grooved finish, offering a low-maintenance, weather-resistant solution for modern outdoor spaces.

Durable Triton dual-sided hollow composite decking with reversible woodgrain and grooved finish, offering a low-maintenance, weather-resistant solution for modern outdoor spaces.

Durable Triton dual-sided hollow composite decking with reversible woodgrain and grooved finish, offering a low-maintenance, weather-resistant solution for modern outdoor spaces.

Durable Triton dual-sided hollow composite decking with reversible woodgrain and grooved finish, offering a low-maintenance, weather-resistant solution for modern outdoor spaces.

Durable Triton dual-sided hollow composite decking with reversible woodgrain and grooved finish, offering a low-maintenance, weather-resistant solution for modern outdoor spaces.

Durable 3.6m anthracite grey composite decking boards with a sleek, low-maintenance finish, ideal for modern outdoor spaces.

Durable 3.6m anthracite grey composite decking boards with a sleek, low-maintenance finish, ideal for modern outdoor spaces.

Durable 4.8m anthracite grey composite decking boards with a sleek, low-maintenance finish, ideal for modern outdoor spaces.

Durable 4.8m anthracite grey composite decking boards with a sleek, low-maintenance finish, ideal for modern outdoor spaces.

Durable 3.6m Brown composite decking boards with a sleek, low-maintenance finish, ideal for modern outdoor spaces.

Durable 3.6m Brown composite decking boards with a sleek, low-maintenance finish, ideal for modern outdoor spaces.

Durable 3.6m Oak composite decking boards with a sleek, low-maintenance finish, ideal for modern outdoor spaces.

Durable 3.6m Oak composite decking boards with a sleek, low-maintenance finish, ideal for modern outdoor spaces.

Durable 4.8m Oak composite decking boards with a sleek, low-maintenance finish, ideal for modern outdoor spaces.

Durable 4.8m Oak composite decking boards with a sleek, low-maintenance finish, ideal for modern outdoor spaces.

Durable 4.8m Slate Grey  composite decking boards with a sleek, low-maintenance finish, ideal for modern outdoor spaces.

Durable 4.8m Slate Grey  composite decking boards with a sleek, low-maintenance finish, ideal for modern outdoor spaces.

Durable anthracite composite end board (3.6m) for a clean, low-maintenance decking finish.

Durable anthracite composite end board (3.6m) for a clean, low-maintenance decking finish.

Durable Brown composite end board (3.6m) for a clean, low-maintenance decking finish.

Durable Brown composite end board (3.6m) for a clean, low-maintenance decking finish.

Durable Oak composite end board (3.6m) for a clean, low-maintenance decking finish.

Durable Oak composite end board (3.6m) for a clean, low-maintenance decking finish.

Durable Slate Grey composite end board (3.6m) for a clean, low-maintenance decking finish.

Durable Slate Grey composite end board (3.6m) for a clean, low-maintenance decking finish.

Brown composite end caps (24x146mm) for a clean, protective decking finish with easy push-fit installation.

Brown composite end caps (24x146mm) for a clean, protective decking finish with easy push-fit installation.

Ash White composite end caps (24x146mm) for a clean, protective decking finish with easy push-fit installation.

Ash White composite end caps (24x146mm) for a clean, protective decking finish with easy push-fit installation.

Slate Grey composite end caps (24x146mm) for a clean, protective decking finish with easy push-fit installation.

Slate Grey composite end caps (24x146mm) for a clean, protective decking finish with easy push-fit installation.

Anthracite composite end caps (24x146mm) for a clean, protective decking finish with easy push-fit installation.

Anthracite composite end caps (24x146mm) for a clean, protective decking finish with easy push-fit installation.

Black composite end caps (24x146mm) for a clean, protective decking finish with easy push-fit installation.

Black composite end caps (24x146mm) for a clean, protective decking finish with easy push-fit installation.

Oak composite end caps (24x146mm) for a clean, protective decking finish with easy push-fit installation.

Oak composite end caps (24x146mm) for a clean, protective decking finish with easy push-fit installation.

Durable 3.6m composite joist (50x30mm) for strong, low-maintenance decking subframes.

Durable 3.6m composite joist (50x30mm) for strong, low-maintenance decking subframes.

Low-profile adjustable decking pedestal (15–20mm) with 120mm base for accurate levelling and support.

Low-profile adjustable decking pedestal (15–20mm) with 120mm base for accurate levelling and support.

20m self-adhesive joist tape for waterproofing and protecting decking subframes from moisture and rot.

20m self-adhesive joist tape for waterproofing and protecting decking subframes from moisture and rot.

Anthracite composite L trim (3.6m) for neat, durable edging and corner finishing on decking and cladding.

Anthracite composite L trim (3.6m) for neat, durable edging and corner finishing on decking and cladding.

Black composite L trim (3.6m) for neat, durable edging and corner finishing on decking and cladding.

Black composite L trim (3.6m) for neat, durable edging and corner finishing on decking and cladding.

Brown composite L trim (3.6m) for neat, durable edging and corner finishing on decking and cladding.

Brown composite L trim (3.6m) for neat, durable edging and corner finishing on decking and cladding.

Oak composite L trim (3.6m) for neat, durable edging and corner finishing on decking and cladding.

Oak composite L trim (3.6m) for neat, durable edging and corner finishing on decking and cladding.

Slate Grey composite L trim (3.6m) for neat, durable edging and corner finishing on decking and cladding.

Slate Grey composite L trim (3.6m) for neat, durable edging and corner finishing on decking and cladding.

Pack of 12 starter clips and screws for securing decking boards with a clean, hidden finish.

Pack of 12 starter clips and screws for securing decking boards with a clean, hidden finish.

Side fix starter clip and screw for hidden edge fixing and a clean, professional decking finish.

Side fix starter clip and screw for hidden edge fixing and a clean, professional decking finish.

Box of 240 T clips and screws for secure, hidden fixing and consistent spacing of composite decking boards.

Box of 240 T clips and screws for secure, hidden fixing and consistent spacing of composite decking boards.

Durable and low-maintenance composite decking board with a dual-sided light grey and charcoal finish, designed for long-lasting outdoor performance and a natural wood look.  (Dual-Sided Woodgrain)

Durable and low-maintenance composite decking board with a dual-sided light grey and charcoal finish, designed for long-lasting outdoor performance and a natural wood look.  (Dual-Sided Woodgrain)

Durable and low-maintenance composite decking board with a dual-sided Antique and golden teak finish, designed for long-lasting outdoor performance and a natural wood look.  (Dual-Sided Woodgrain)

Durable and low-maintenance composite decking board with a dual-sided Antique and golden teak finish, designed for long-lasting outdoor performance and a natural wood look.  (Dual-Sided Woodgrain)

Durable co-extruded composite end board in an antique finish, edging, and completing decking installations with a clean, low-maintenance look.

Durable co-extruded composite end board in an antique finish, edging, and completing decking installations with a clean, low-maintenance look.

Durable co-extruded composite end board in an Charcoal finish, edging, and completing decking installations with a clean, low-maintenance look.

Durable co-extruded composite end board in an Charcoal finish, edging, and completing decking installations with a clean, low-maintenance look.

Durable co-extruded composite end board in an Golden Teak finish, ideal for edging, and completing decking installations with a clean, low-maintenance look.

Durable co-extruded composite end board in an Golden Teak finish, ideal for edging, and completing decking installations with a clean, low-maintenance look.

Durable co-extruded composite end board in an Light Grey finish, ideal for fascia, edging, and completing decking installations with a clean, low-maintenance look.

Durable co-extruded composite end board in an Light Grey finish, ideal for fascia, edging, and completing decking installations with a clean, low-maintenance look.

Composite L trim in an antique finish, ideal for covering decking edges and corners with a clean, durable, and low-maintenance solution.

Composite L trim in an antique finish, ideal for covering decking edges and corners with a clean, durable, and low-maintenance solution.

Composite L trim in an Charcoal finish, ideal for covering decking edges and corners with a clean, durable, and low-maintenance solution.

Composite L trim in an Charcoal finish, ideal for covering decking edges and corners with a clean, durable, and low-maintenance solution.

Composite L trim in an Golden Teak finish, ideal for covering decking edges and corners with a clean, durable, and low-maintenance solution.

Composite L trim in an Golden Teak finish, ideal for covering decking edges and corners with a clean, durable, and low-maintenance solution.

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Fortex 333mm Double Shiplap 5m | Anthracite Grey is an external cladding product for external cladding projects. 333mm, 5m; Anthracite Grey finish. Product code: FFFCD333EAG.

Fortex 333mm Double Shiplap 5m | Argyl Brown is an external cladding product for external cladding projects. 333mm, 5m; Brown finish. Product code: FFFCD333EAB.

Fortex 333mm Double Shiplap 5m | Cappuccino is an external cladding product for external cladding projects. 333mm, 5m; Cappuccino finish. Product code: FFFCD333ECAP.

Fortex 333mm Double Shiplap 5m | Colonial Blue is an external cladding product for external cladding projects. 333mm, 5m; Blue finish. Product code: FFFCD333ECLB.

Fortex 333mm Double Shiplap 5m | Misty Grey is an external cladding product for external cladding projects. 333mm, 5m; Grey finish. Product code: FFFCD333EMG.

Fortex 333mm Double Shiplap 5m | Pale Gold is an external cladding product for external cladding projects. 333mm, 5m. Product code: FFFCD333EPG.

Fortex 333mm Double Shiplap 5m | Sage Green is an external cladding product for external cladding projects. 333mm, 5m; Green finish. Product code: FFFCD333ESAGN.

Fortex 333mm Double Shiplap 5m | Sand is an external cladding product for external cladding projects. 333mm, 5m. Product code: FFFCD333ESAND.

Fortex 333mm Double Shiplap 5m | Slate Grey is an external cladding product for external cladding projects. 333mm, 5m; Slate Grey finish. Product code: FFFCD333ESLG.

Fortex 333mm Double Shiplap 5m | Storm Grey is an external cladding product for external cladding projects. 333mm, 5m; Storm Grey finish. Product code: FFFCD333ESG.

Fortex 333mm Double Shiplap 5m | White is an external cladding product for external cladding projects. 333mm, 5m; White finish. Product code: FFFCD333EW.

Cedar-effect composite fence kit with aluminium post for a durable, low-maintenance and modern garden boundary.

Charcoal -effect composite fence kit with aluminium post for a durable, low-maintenance and modern garden boundary.

Anthracite composite fence kit with aluminium post for a durable, low-maintenance and modern garden boundary.

Anthracite composite fence kit with composite post for a durable, low-maintenance and modern garden boundary.

Ash White composite fence kit with aluminium post for a durable, low-maintenance and modern garden boundary.

Ash White composite fence kit with composite post for a durable, low-maintenance and modern garden boundary.

Brown composite fence kit with aluminium post for a durable, low-maintenance and modern garden boundary.

Brown  composite fence kit with composite post for a durable, low-maintenance and modern garden boundary.

Slate Grey composite fence kit with aluminium post for a durable, low-maintenance and modern garden boundary.

Slate Grey composite fence kit with composite post for a durable, low-maintenance and modern garden boundary.

Modern slatted Charcoal composite fence system with aluminium post, offering durable, low-maintenance and contemporary garden fencing.

Heavy-duty orange grip nitrile gloves with superior strength and comfort. Sizes S–XL.

*** Introductory Offer ***

Heavy-duty orange grip nitrile gloves with superior strength and comfort. Sizes S–XL.

*** Introductory Offer ***

Ultragrime Pro XXL | Multiuse Clothwipes Pack 100 is a fixing and accessory for fixing and installation projects. Product code: UNIWIPEBLUE.

  • Excellent Prices & Fast Delivery

    Excellent service from start to finish. Ordered fascia boards online and they arrived quickly and very well packaged. Prices were much better than local suppliers and the staff were really helpful when I called with a question. Will definitely use Building Plastics again

    James Morgan / 23rd June 2025

  • Great Service for Trade & DIY

    Fantastic company to deal with. Easy website to use, great communication throughout and delivery arrived exactly when promised. The quality of the cladding products was spot on. Highly recommend to both trade and DIY customers

    Sarah Williams / 16 November 2025

  • Reliable Supplier With Great Stock

    Opened a trade account recently and have been very impressed with the prices and service. Staff are knowledgeable and always happy to help. Fast delivery across South Wales and products are always in stock when I need them

    Daniel Hughes / 12 January 2026

  • Perfect EPDM Roofing Order

    Ordered EPDM roofing materials online and everything arrived the next day. Packaging was excellent and the products were exactly as described. Great customer support and very competitive prices compared to other suppliers.

    Rebecca Evans / 13 January 2026

  • Smooth Ordering From Start To Finish

    Brilliant experience using Building Plastics Wales Ltd. Ordered underground drainage supplies and the whole process was smooth from ordering to delivery. Friendly staff, great prices and excellent communication throughout

    Mark Thompson / 19 April 2026