What the two materials actually are
Chromadek® is a pre-painted steel sheet — a factory-applied colour coating over galvanised steel. Aluminium is exactly what it says, extruded and finished. Both are legitimate choices for a patio awning in Gauteng; we build and guarantee both, which is not something every supplier does.
The practical difference is not "one is good and one is cheap". It's a trade between the finish you want, the guarantee period you want behind it, and where the system will spend its life.
Side by side
| Aluminium | Chromadek® | |
|---|---|---|
| Guarantee | 15 years | 10 years |
| Corrosion behaviour | Does not rust | Protected by coating and galvanising |
| Relative cost | The premium option | The friendlier price |
| Finish | Crisper edges, more refined profile | Clean sheet finish, slightly more industrial |
| Colours | Black, Charcoal, Bronze, Traffic White | Black, Charcoal, Bronze, Traffic White |
| Best suited to | Feature patios, long-term ownership, coastal air | Budget-conscious builds, carports, larger areas to cover |
Where each one wins
Choose aluminium when the awning is a visible architectural element — over the main entertainment patio, on a contemporary house where the frame sits alongside aluminium window and door profiles, or anywhere salt air is a factor. The extra five years of guarantee is the honest headline, but the finish is usually what decides it.
Choose Chromadek® when you need to cover more area for the money. A carport, a service courtyard, a large patio where the budget has to stretch — these are exactly the jobs Chromadek® was made for, and a 10-year guarantee is not a short commitment.
What stays the same either way
This is the part clients are often surprised by. The engineering doesn't change with the material: both get a full all-round gutter system with multiple downpipe outlets, both are custom-made to your measurements rather than cut down from stock sizes, and both are available across all four of our finishes. Our louvre systems are 95% watertight when closed regardless of which material carries them.
Maintenance
Neither material needs much. Rinse the surface when you're cleaning windows, and — more importantly — keep the gutters clear. On the Highveld the thing that actually causes problems is not the roof sheet; it's a gutter full of leaves and grit going into a summer storm. Check the outlets at the start of the rainy season.
Which should you ask us to quote?
Both, if you're undecided. Because every system is custom-made, we quote from your actual space — so asking for the same patio priced in aluminium and in Chromadek® is a normal request, and it turns an abstract material debate into two real numbers you can compare. Send a photo of the area with rough width, projection and height to get started.
