Why aluminium is the coastal favourite
Aluminium does not rust — full stop — which is exactly what a sea-facing Durban stand needs. Where salt air attacks steel through any gap in its protection, aluminium reacts with the air to form a thin, self-healing oxide layer that seals itself, so it shrugs off the coastal salt without a zinc coat or repainting. Add a factory powder-coat that holds its colour under the intense coastal UV, and a light section that keeps posts and beams slim, and it is easy to see why aluminium takes a bigger share of carports here than it does inland.
| Aluminium | Galvanised steel | |
|---|---|---|
| Rust on the coast | Never | Resists — zinc coat does the work |
| Finish | Factory powder-coat | Galvanised / Chromadek roof |
| Upkeep near the sea | Rinse-off only | Watch cut ends and knocks |
| Single price | R12,000 – R22,000 | R6,500 – R14,000 |
Aluminium, wind and rain
An aluminium carport still needs the right roof and the right footings for the coast — the frame is rust-proof, but the roof keeps the rain off and the footings hold it against the onshore wind. KB Carports pairs the aluminium structure with an IBR-profile roof pitched for Durban's heavy summer rain, and anchors sea-facing frames into wind-rated footings; the reasoning is the same as for a galvanised steel carport and is set out in coastal corrosion and wind.
Where aluminium is worth the premium
Aluminium earns its premium closest to the sea — the sea-facing stands of Umhlanga and Durban North, Umdloti and the beachfront belt, where salt exposure is highest and the no-rust structure simply lasts. Further inland a hot-dip galvanised steel carport gives the same cover for less. Compare both on the carport prices in Durban page.
Common questions
How much is an aluminium carport in Durban?
An aluminium carport in Durban costs from R12,000 for a single and R22,000–R40,000 for a double, supplied and installed — about one and a half times an equivalent steel carport. On the coast the premium buys a frame that never rusts.
Why is aluminium so popular for carports in Durban?
Aluminium is popular in Durban because it never rusts in the coastal salt air — it forms a self-sealing oxide layer instead of relying on a zinc or paint coat. On sea-facing stands it takes a bigger share of carports here than it does inland for exactly that reason.
Is an aluminium carport worth it near the sea?
Near the sea an aluminium carport is often worth the premium, because it removes the salt-air corrosion risk entirely and needs little more than a rinse to keep. On stands set well back from the coast, a cheaper galvanised steel carport is enough.