Composite Joist 40x20mm – 2.4m

Low Composite Joist 40 × 20 mm – 2.4m

Slim profile. Stable support. Ideal for low decking and cladding structures.

The low composite joist 40 × 20 mm (2.4 m length) is a practical solution for decking and cladding projects where reduced installation height is required. Its slim profile makes it perfect for terraces, balconies, or spaces with limited clearance, while still ensuring stability and durability as a substructure.

Made from a durable wood-plastic composite (WPC), this joist is resistant to rot, moisture, insects, and deformation. It provides a long-lasting, maintenance-free base for composite boards, guaranteeing a professional and stable installation.

Key Benefits

• Low-profile design – perfect for terraces, balconies, and areas with limited installation height

• Durable composite material – resistant to moisture, rot, fungi, and insects

• Stable substructure – ensures proper board alignment and long-term performance

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

• Lightweight yet strong – easy to work with during installation

• Eco-conscious – produced using recycled wood fibers and polymers

Technical Specifications

• Product type: Low composite joist

• Dimensions: 40 × 20 mm

• Length: 2,400 mm

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

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

• Profile: Slim, rectangular support beam

• Compatibility: Composite decking and cladding systems

• Installation: Substructure for low-height areas, fixed with clips/screws

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

• Maintenance: Maintenance-free

Why Choose Low Composite Joists?

Because they provide the strength of a standard joist in a slim profile. The 40 × 20 mm joist is the perfect choice for installations where space is limited but durability and stability are essential.

A smart foundation for low-height, professional composite installations.