Waterproof Eco-friendly Double-sided: narrow groove or woodgrain finish No painting or sealing required Won't warp, rot, fade or splinter Easy to clean & slip-resistant Our composite decking boards have the natural look of wood with the durability of modern composite materials. They're waterproof, low maintenance and built to withstand the British weather without warping, rotting or splintering. They're easy to install, with no painting or sealing required. Each board is reversible, with a choice of a narrow groove or realistic woodgrain finish. To complete your decking project, you may also need: Composite Decking Fascia Board - Covers the deck framework and exposed board ends for a neat, finished look. Composite Decking Bullnose Edge Board - Creates a smooth, rounded edge for decking and steps, giving a smart, safe finish. Composite Decking Finishing Trim - Covers exposed edges and gaps for a clean, seamless finish. Starter Clips & Screws - Secure the first decking board to create a strong, neat starting edge. Clips & Screws - Hidden fixing clips and corrosion-resistant screws for a secure, screw-free finish. How To Fit Your Composite Decking: Build a strong subframe with joists spaced no more than 300mm apart. Create a slight slope so rainwater can drain away from your home. Fit the decking boards by securing the first board with starter clips, then continue installing each board using the hidden fixing clips for a clean, seamless finish. Finish the edges with bullnose boards, fascia boards and trims for a neat, professional look. Leave 2mm expansion gaps where boards, walls and trims meet to allow for natural movement. See full installation guide here.