The physics, simply put
Interior blinds manage heat that's already inside the house. External venetians intercept most of it before it ever crosses the glass. On a big north- or west-facing wall of glass looking down the fairway, that difference is dramatic — it's how architects shade proper glass buildings, not just dress a window.
Built for the outside
Wide aluminium slats, in the 60–90mm class, run in guided side rails or cables and tilt and raise much like an interior venetian — but engineered to live outside. They're effectively always motorised, with a wind sensor as standard: an exposed external blind has to protect itself the moment a highveld gust or hailstorm arrives, not wait to be rescued.
- Powder-coated finishes engineered for weather exposure
- Retrofit is possible on the right elevations — planning at design stage helps most
- Genuinely cuts the load on an aircon system that's losing the battle against a glass wall
Worth knowing before you commit
Where the hard walls sit
It's the assessment we make most on hard west-facing glass — the ridge-top windows of Northcliff, fairway-facing lounges in Ruimsig, and the bigger stands of Featherbrooke Estate and Constantia Kloof all get the same look before we recommend it.