4m Structural Composite Joist

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Produced from recycled plastics and measuring 4000mm x 100mm x 50mm, the structural composite joists are available in charcoal colour only. Ideally placed onto a concrete base unde rneath, these structural composite decking joists will ensure that everything is correctly positioned and crucially give a strong foundation for your project. Installation Notes These joists have been specifically designed with durability in mind. For optimal strength and reliability, we recommend purchasing one structural composite joist for every square metre of decking, with a maximum spacing of 400mm between each joist. To ensure correct installation, please refer to the installation guides. It's important to note that these structural joists require support every 1m. When installing composite decking onto our structural joists, we advise a maximum of 400mm centres. For PVC decking installations, we advise 300mm centres. With our Decking Joist Support, you can trust that your deck will be both sturdy and safe. The colour of your joists does not need to match the rest of your installation as they will be installed within the foundations and can be hidden with decking and fascia boards. Product Specifications: Length: 4m Width: 100mm Thickness: 50mm Weight: 17.24kg Show more