Comparison
Galvanised Steel vs Aluminium Solar Structures
Aluminium is light and corrosion-resistant; galvanised steel is stronger, stiffer and more economical for most ground-mount and heavy-duty applications.
| Specification | Galvanised Steel | Aluminium |
|---|---|---|
| Strength / stiffness | Higher | Lower (more section needed) |
| Corrosion resistance | Via zinc coating | Inherent |
| Weight | Heavier | Lighter |
| Cost | Lower | Higher |
| Typical use | Ground-mount, heavy-duty | Select rooftop / weight-critical |
Frequently asked questions
- Why is galvanised steel common for ground-mount?
- It offers the best strength-to-cost ratio for load-bearing ground-mount structures, with hot-dip galvanising providing long-term corrosion protection.
Not sure which to choose?
We will recommend based on your site and load case.