WPC Mounting Joist 3×4×290 cm

WPC Mounting Joist 3×4×290 cm

Synthetic WPC Joist – Durable Substructure for Outdoor Decking

The WPC mounting joist 3×4×290 cm is a stable base for composite decking. Purpose-built for WPC boards, it delivers excellent structural integrity and long-term performance in outdoor conditions, keeping boards aligned and secure over time.

Key Benefits

• High resistance to moisture, corrosion and UV exposure.

• Easy to cut and shape, just like natural wood.

• Recommended joist spacing: 30–35 cm to prevent board warping.

• Simple installation with screws; compatible with start and connector clips.

The 290 cm length minimizes offcuts and supports economical material use—ideal for smaller decks or auxiliary areas. For best results, install on a firm, level surface with a slight fall to promote drainage.

Installation Tip
Pre-drill before screwing and allow adequate expansion gaps between WPC boards.