| Brand Name: | SUNHOUSE |
| Model Number: | wpc-d-15 |
| MOQ: | 100㎡ |
| Payment Terms: | T/T |
This 146x24mm four-chamber hollow WPC decking board introduces a reversible dual-face design that sets it apart from conventional single-face outdoor decking. Both faces of the board carry a fully finished 3D embossed texture, meaning the board can be flipped and reinstalled when the primary surface shows wear — effectively extending the functional service life without replacing the decking material. For property managers, resort operators, and contractors running high-traffic outdoor spaces, this translates directly into lower long-term flooring replacement cost per square metre.
The four-hole hollow chamber profile is engineered to balance structural rigidity with reduced material weight. Four parallel internal voids run the full board length, cutting board mass relative to equivalent solid profiles while the remaining wall and rib structure maintains the load distribution required across a standard 400mm joist span. The result is a board that is easier to handle on site, less demanding on elevated subframes, and more cost-efficient to ship in volume — without compromising the surface performance expected of commercial-grade outdoor decking.
Surface texture is applied through a three-stage finishing process combining 3D embossing, sanding, and brushing. This layered approach produces a surface that reads as natural timber both visually and underfoot, with sufficient micro-texture to maintain grip in wet conditions. HDPE resin and UV stabilizer additives are compounded into the board body before extrusion — weatherproofing and color stability are built into the material structure, not dependent on surface treatments that degrade over time.
| Parameter | Specification | Notes |
|---|---|---|
| Material | HDPE + Wood Flour + Additives | Wood Plastic Composite (WPC) |
| Profile Type | 4-Hole Hollow Chamber | Four parallel internal voids, dual-face finished |
| Standard Section Size | 146 x 24mm (W x T) | Black colorway standard size |
| Color-Specific Sizes | Red: 137x23mm / Brown: 140x22mm / Dark Brown: 140x23mm / Light Grey: 140x25mm / Black: 146x24mm | Also available: 148x23mm, 150x25mm |
| Length | Customizable | Cut to project-specified length on order |
| Surface Treatment | 3D Embossed + Sanded + Brushed | Three-stage process; both faces finished |
| Dual-Face Design | Yes — Both Faces Textured | Board reversible; extends usable service life |
| Standard Colors | Coffee / Light Grey / Red / Dark Brown / Black / Teak | Multiple wood grain tones available |
| Max Joist Spacing (C/C) | 400mm | Do not exceed 400mm centre-to-centre |
| Min. Ground Clearance (with drainage) | 40mm | Minimum recommended installation height |
| Min. Ground Clearance (without drainage) | 90mm | Required for enclosed or restricted sub-deck areas |
| Waterproof | Yes — Full Board Profile | HDPE matrix, non-porous throughout |
| Anti-Slip | Yes — Both Faces | 3D emboss texture provides wet-surface grip |
| UV Resistance | Yes — Compound Integrated | UV stabilizer added at raw material stage |
| Rot / Insect Resistance | Yes | HDPE encapsulation prevents biological access |
| Maintenance | Water and mild detergent only | No sealing, oiling, or chemical treatment needed |
| MOQ | 100 m² | Mixed color and size orders accepted |
| Origin | Foshan, Guangdong, China | Factory direct — no intermediary |
The four-chamber dual-face WPC board addresses project scenarios where longevity, installation flexibility, and cost-per-year-of-use are evaluated alongside upfront material price. Its reversible face design and lightweight hollow profile make it particularly suited to applications where periodic surface renewal would otherwise require full material replacement.
Installation Note: Maximum joist centre-to-centre spacing is 400mm. Maintain a minimum ground clearance of 40mm where sub-deck drainage is in place. In enclosed or poorly ventilated sub-deck conditions, increase clearance to a minimum of 90mm to ensure airflow through the hollow chamber voids and prevent moisture accumulation at the underside of the board.