Aluminum Roof Racks: Why They're Stronger Than You Think – Stability, Weight & Assembly
Denis KhristolyubovAn aluminium roof rack might look delicate at first glance – yet it safely carries a rooftop tent, roof box, solar panel, and heavy equipment over thousands of kilometers. Here, we explain why aluminium roof racks are significantly more stable than many people think, and what really matters when it comes to roof load, weight, and mounting.
Why an aluminium roof rack is more stable than you think
The stability of a roof rack depends not only on the material but, most importantly, on the profile geometry. Modern aluminium profiles are pressed (extruded) in such a way that load-bearing walls, stiffening ribs, and mounting rails are directly integrated into the profile. This gives an aluminium roof rack high rigidity with very low dead weight – exactly what is needed for a robust roof rack platform.
Aluminium vs. Steel in Roof Racks
In the past, many roof racks were made from welded steel tubes. Modern platform systems, however, rely on aluminium – for good reasons:
- Weight: At approx. 2.7 g/cm³, aluminium is about three times lighter than steel (approx. 7.8 g/cm³).
- Corrosion protection: Aluminium naturally forms a protective oxide layer and does not rust.
- Profile geometry: Complex profiles with grooves and attachment points can only be manufactured economically in aluminium.
How much roof load remains for accessories?
The permissible roof load of a vehicle is limited. The lighter the roof rack itself, the more payload remains for equipment. A light aluminium roof rack therefore means more reserve for:
- Rooftop tent
- Awning
- Transport box
- Solar panel
- Outdoor equipment
Modular Mounting: Easily Attach Rooftop Tent, Awning, and Solar
A major advantage of extruded aluminium profiles is their modular design. Integrated mounting rails allow accessories to be flexibly mounted and the system to be expanded at any time – from a rooftop tent and awning to lighting and equipment holders.
Technical Background: Aluminium EN AW-6063-T66
The Airholder roof rack system uses profiles made from aluminium EN AW-6063 in T66 condition. This alloy from the Al-Mg-Si group combines low weight, sufficient strength, high corrosion resistance, and excellent suitability for extrusion profiles. Typical values: Tensile strength approx. 240–260 MPa, yield strength approx. 200–215 MPa, density approx. 2.7 g/cm³. The same profiles are also used in vehicle construction and aviation for structural and guiding elements.
Conclusion
An aluminium roof rack combines low weight with high stability and corrosion resistance. Thanks to optimized profiles and modular mounting, it is the ideal basis for a robust, durable roof rack platform – more stable than many initially think.
