Brown Recycled Plastic Decking Joist - Length 2.4m x Width 50mm Reviews

The composite joist is made from recycled plastic and comes in a length of 2.4m and a cross-section of 50mm × 50mm, making it a compact but sturdy support beam for decking installations. Designed to carry composite decking boards securely, this joist resists rot, moisture absorption and decay — problems commonly associated with traditional timber joists in damp UK conditions. Its recycled plastic construction means it won’t warp, split or rot over time, offering a stable platform that keeps the deck structure reliable year after year. It’s ideal for DIY deck builds, retrofit jobs or new installations, and helps create a level, even surface for the boards above. Installation is straightforward: you can cut the joists to size easily and fix them using standard decking fixings. Because they are lightweight compared with timber yet strong enough to support decking loads, they’re manageable for one-person installs or small DIY teams.