Low Aluminium Joist 40 × 20 mm – 3m

Low Aluminium Joist 40 × 20 mm – 3m

Slim profile. Maximum durability. Premium solution for low installations.

The low aluminium joist 40 × 20 mm (3 m length) is a premium substructure element designed for decking and cladding projects where limited installation height is required. Despite its slim profile, it offers excellent strength, dimensional stability, and long-lasting performance, making it ideal for terraces, balconies, or areas with restricted clearance.

Made from high-quality aluminium, this joist is completely resistant to rot, moisture, pests, and deformation. It provides a maintenance-free and ultra-durable base, ensuring that composite boards remain perfectly supported for decades.

Key Benefits

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

• Durable aluminium construction – corrosion-resistant and dimensionally stable

• Long-lasting performance – will not warp, rot, or degrade

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

• Strong foundation – ensures proper board alignment and stability

• Professional quality – suitable for residential and commercial projects

Technical Specifications

• Product type: Low aluminium joist

• Dimensions: 40 × 20 mm

• Length: 3,000 mm

• Material: High-grade aluminium alloy

• Color: Black (powder-coated for corrosion protection)

• Profile: Slim rectangular support beam

• Compatibility: Composite decking and cladding systems

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

• Resistance class: 100% resistant to UV, moisture, frost, mold, fungi, insects

• Maintenance: Completely maintenance-free

Why Choose Low Aluminium Joists?

Because they combine the durability of aluminium with the practicality of a slim profile. The 40 × 20 mm joist is the perfect choice for projects where installation space is limited but long-term stability and performance are essential.

A premium foundation for professional, low-profile composite installations.