Our Products/Co-extrusion WPC decking

Solid Composite Board

  • Water proof

  • Eco-friendly

  • UV-resist

  • Low maintenance

Pattern Selection
  • Wood Vein

  • Matt Texture

  • Saw Mark

  • Smooth Surface

All you need to know

√   4-sided co-extruded decking board

√   One side aged and one side smooth

√   10 standard colours

√   15-year warranty against stains and fading

Product highlights

360° co-extruded protection

Reversible profile: 2 effective sides

  • Material

    Wood fiber+HDPE+Additives

  • Sizes

    23 x 138 mm

  • Fasteners

    Stainless steel clip/ABS plastic clip

  • Extrusion type

    Co-extrusion 360°

  • Slipperiness

    Pendulum value: 46-90

  • Flexural properties

    Bending Strength: 48.7 MPa

  • Water absorption

    Mean: 0.24% Max: 0.26%

  • Fire test

    Class C

Natural texture&Multi-coloured

With natural appearance and texture of wood, the decking board has better dimensional stability than wood and no wood knots, cracks, warpage, and deformation. The product can be made into a variety of colors, and its surface does not need to be painted.


Grinwood WPC decking can be widely used in square, garden, landscape and some other outdoor areas. It has wooden touch feeling and easy installation characteristics. Grinwood WPC decking system has wide specification, diverse appearance, wonderful color and easy installation, it is an ideal building material used for outdoor decoration.


Grinwood warrants that Solid decking for a period of 15 years under normal and proper service and installation conditions in accordance with Grinwood's written instructions, will be free from defects in workmanship, splitting, delaminating, rotting or structural damage caused by mildew, fungus, wood-boring insects or termites.

Grinwood warrants Solid decking to be stain and fade resistant when installed and used in residential applications.

Solid decking is stain-resistant and long-lasting thanks to a co-extrusion process covering the decking with a pure polyethylene film to ensure a perfect seal. Maintenance is therefore easy and limited to a simply cleaning with water.


90% recycled raw material

Grinwood composite decking is made from 90% recycled raw materials and the boards are also fully recyclable.

The high-density polyethylene (HDPE) comes from the recycling of plastic waste (e.g. plastic bottles) and the wood fibre from sawdust from secondary processing companies such as furniture and joinery manufacturers.

The manufacture of Grinwood composite decking does not endanger tropical forests and is an attractive alternative to exotic woods.

Technical documents
Drawing display