Our Products/Co-extrusion WPC decking

Square Hollow 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

√   Co-extruded decking

√   Exotic Wood relief grained surface

√   Multi-chromatic colours

√   Stain and fading resistant

√   Matte smooth face

√   Stain and fading resistant

Product Benefits

360° co extruded cap

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: 41.0 MPa

  • Water absorption

    Mean: 0.87% Max: 0.9%

  • Fire test

    Class C

Second generation decking board

Co-extrusion wpc profile is a new product in recent years. It is aslo called capped composite decking. It is produced by the most advanced extrusion technology in the industry. Comparing ordinary wood plastic , Co-extruded wood plastic has an additional protective layer, it is more wear-resistant, scratch-resistant, stain-resistant, no cracking, no mildew.


Grinwood WPC Material Co., Ltd. warrants to the original purchaser (“Purchaser”) that, for the period of times set forth in the following sentence, under normal use and service conditions, Grinwood product shall be free from material defects in workmanship and materials, and shall not split, splinter, rot or suffer structural damage from termites. The term of such warranty shall be fifteen (15) years from the date of original purchase for a residential application, and ten (10) years from the date of original purchase for a commercial application.

Grinwood deck boards are fully resistant to stains, and its radiance is sustained by a co-extrusion process, which covers the board with a pure polyethylene film to ensure perfect sealing of the coating. Maintenance is easier and is limited to just rinsing with water.

The high-density polyethylene and wood fibre mixture forming the board’s core also ensures very good resistance to knocks and wear.


Grinwood decking is an environmentally-friendly product. 90% manufactured with raw materials from the recycling industry, the decking is also entirely recyclable.

High-density polyethylene (HDPE) comes from the recycling of plastic waste (plastic bottles), and the wood fibres come from sawdust from manufacturers such as furniture makers.

Manufacturing Grinwood deck boards does not harm tropical forests and is an attractive alternative to exotic timber.

Technical documents
Drawing display