Quick Verdict:
Chromadek® wins for Gauteng—superior UV/fade protection, colour options, similar hail at 0.5mm, only 20–30% more.
Comparison Table
| Aspect | Chromadek® (Colour-Coated) | Galvanised (Plain Zinc) | Winner |
|---|---|---|---|
| Corrosion/UV Resistance | Excellent (coating + zinc base) | Good (zinc sacrifices) | Chromadek |
| Maintenance | Low (no repainting needed) | Higher (rust spots over time) | Chromadek |
| Heat Reflection | Better (lighter colours) | Moderate | Chromadek |
| Hail (0.5mm) | Excellent | Excellent | Tie |
| 2026 Cost/m² | R180–R280 | R150–R220 | Galvanised cheaper |
| Lifespan Gauteng | 20–35+ years | 15–25 years | Chromadek |
Expand on why genuine Chromadek® (like yours) has 10–30 year warranties vs fakes. Checklist: Ask for ArcelorMittal certs.