WPC Co-Extrusion Decking 140 x 23 mm (4.12 kg/m) is the heaviest board in our capped range - at 4.12 kg per meter the 140 x 23 section is almost fully filled, giving a volumetric density of 1.28 g/cm3, a notch denser than our standard solid formula. You feel that weight underfoot: a solid, drum-free step, no flex under a crowd, no deformation under sustained load, and far less risk of wind uplift. The dense core also holds fixings firmly, so installation locks in first time. Its weather resistance comes from a polymer shell extruded in step with the core and fused into it - not a laminated film, so there is no layer to peel, blister or lift at the edges. UV exposure won't bleach the colour, rain won't leave it damp or mouldy, and oily or saucy spills wipe straight off the sealed surface - no paint, no wax, ever. With 140 mm width and 23 mm thickness it is the balanced ratio for a wide range of decks: ground-level gardens, terraces, walkways and pool surrounds. Weather resistance with real substance - the heavy-duty answer in our co-extrusion line.

WPC Co-Extrusion Decking 148 × 22.5 mm (2.75 kg/m) — the wide-board option in our capped composite line. A polymer shell is co-extruded around the core in a single pass and fully bonded 360°, so it will not peel, delaminate or lift at the edges. The result is built-in weather resistance: UV-stable and fade-free, holding its factory colour after years in the sun; a dense, non-porous surface that repels coffee, sauce and oil stains — wipe once and it's clean, no staining, no mould; waterproof, scratch- and wear-resistant, with no painting, oiling or waxing ever needed. The 22.5 mm profile weighs just 2.75 kg per meter — solid underfoot yet light to handle, transport and install, ideal for rooftop terraces, balconies and poolside areas where weight and labour matter. And at 148 mm it is wider than standard 140 mm boards, so you need fewer boards and fewer joints for a more continuous, seamless-looking deck.