WPC Mounting Joist 3×4×390 cm

WPC Mounting Joist 3×4×390 cm

Synthetic WPC Joist – Sturdy Base for Large Outdoor Decks

The WPC joist 3×4×390 cm provides extra length for fewer joints and a more robust substructure. It is the go-to choice for larger decking areas, ensuring long-term strength, stability and precise board alignment.

Key Benefits

• Weatherproof and resistant to moisture and temperature changes.

• Rigid base that reduces long-term deck deformation.

• High-quality WPC material with low maintenance.

• 390 cm length for broader coverage and fewer connection points.

Fast to install with screws or brackets and fully compatible with standard WPC clip systems. For optimal drainage, fit with a slight slope on a solid, ventilated base.

Installation Tip
Pre-drill before screwing and keep proper expansion gaps between joists and boards for safe, long-lasting performance.