WPC Joist for Deck Substructure

WPC Installation Joist – Durable Deck Substructure

The WPC installation joist is the ideal solution for supporting composite deck boards. It offers exceptional strength and long-term durability. Designed specifically for WPC products, it ensures stability and resilience in all outdoor constructions.

Features & Benefits

• High durability – Resistant to weather, moisture, and corrosion, making it perfect for outdoor use.

• Stable substructure – Recommended spacing between joists: 30–35 cm, preventing board warping or sagging.

• Easy installation – Can be directly screwed into the ground; starting and joining clips are easily attached to its surface.

• Available dimensions:

  • 3x4x290 cm (height x width x length)

  • 3x4x390 cm (height x width x length)
    These dimensions minimize material waste and optimize cost-efficiency.

• Wood-like workability – Easily cut and shaped while retaining wood-like properties.

• Proper drainage – For optimal WPC board performance, install the joist on a stable, flat surface with a slight slope for drainage.

Installation Tips

• Pre-drilling recommended – Prevent cracking by pre-drilling before screwing WPC boards into place.

• Expansion spacing – WPC boards expand and contract; a proper substructure is crucial for long-lasting performance.

The WPC installation joist ensures strength, easy installation, and an excellent aesthetic result—making your decking a high-quality and durable investment.