Comparison
Best Coating for Coastal Solar Sites: HDGI vs Pre-Galvanised
Coastal salinity accelerates corrosion, so coating choice is critical for structures near the sea.
| Specification | HDGI | Pre-Galvanised |
|---|---|---|
| Salt-spray durability | High (thick, full coverage) | Lower (thin, exposed edges) |
| Edge protection | Complete | Exposed at cuts |
| Recommended for coast | Yes | Only with added protection |
| Life near coast | Longest | Reduced |
Frequently asked questions
- What coating is best within a few km of the sea?
- Hot-dip galvanising (HDGI), and often ZAM, are preferred near coasts because they resist salt-driven corrosion and protect cut edges better than thin pre-galvanised coatings.
Not sure which to choose?
We will recommend based on your site and load case.