Composite Joist 50x30mm – 4m

Composite Joist – 4m

Strong foundation. Stable support. Essential for composite decking and cladding.

The composite joist (4 m length) is an essential structural element for the proper installation of composite decking and cladding systems. Acting as the supporting substructure, it provides a stable, durable, and moisture-resistant base, ensuring long-lasting performance of the entire system.

Unlike traditional wooden joists, the composite version is resistant to rot, moisture, insects, and deformation, making it a maintenance-free and reliable solution for both residential and commercial projects.

Key Benefits

• Essential support system – designed for composite decking and cladding installations

• Durable composite construction – resistant to moisture, rot, mold, and insects

• Stable and strong – ensures proper board alignment and long-lasting performance

• Maintenance-free – no oiling, painting, or protective treatment required

• Versatile use – suitable for terraces, façades, soffits, and other exterior applications

• Eco-friendly – made from recycled wood fibers and polymers

Technical Specifications

• Product type: Composite joist

• Length: 4,000 mm

• Profile: Rectangular (structural support beam)

• Material composition: 60% wood flour + 30% HDPE polymer + 10% additives

• Color: Black (universal, non-visible in installation)

• Compatibility: Composite decking and cladding systems

• Installation: Laid as substructure, fixed with clips/screws

• Resistance class: UV, moisture, mold, fungi, insects

• Maintenance: Maintenance-free, long-lasting performance

Why Choose Composite Joists?

Because they provide the foundation for a stable and durable installation. By replacing traditional timber joists, composite joists eliminate the risk of rot and deformation, ensuring your decking or cladding remains strong and secure for years.

The essential base for every professional composite installation.