ᐅ Experiences with Exterior Venetian Blinds (Raffstores)

Hello,

we have planned to install an external venetian blind with guide rails on a 3.76m (12.3 feet) wide window. Would it be more practical to install two separate blinds on this window, as they might be less susceptible to wind or generally more stable, or does it not make a difference?

Kind regards,
Sabine

0.5m (20 inches) or 2.5m (8 feet) height?
1 fixed panel?
2-panel sliding door?
3 panels: 2 without mullion, 1 fixed?
4 panels?
Windward side?

The external venetian blind manufacturers specify minimum and maximum widths for the different types and profile sizes.
Visually, the divided units are less attractive.
They perform better under higher wind loads. In both cases, however, a wind sensor should activate well before reaching the critical wind load (I believe 60 km/h (37 mph) wind speed).
If this is a patio door and only one-third or half opens, it can work.
Opening two-thirds makes little sense, as you would need to raise two-thirds anyway to go outside.
With one-third or half open, you can still go outside and the room remains partially shaded.

The venetian blind will be 2.35 m high (7 ft 8 in) and is installed on a fixed glazing with two window sections. Have you installed a wind sensor?

Best regards,
Sabine

The manufacturer can tell you. There are many different versions.
Is the window protected, or is it more exposed directly to an open area?

We have a similar size, fixed-glass windows.
At the moment, I can't tell you whether that is a venetian blind or 3.

If the window faces west (in Germany usually the wind and rain side), I would divide it.
You can install the wind guard or not. With 0.6m (2 feet) external blinds, it is definitely not necessary. When installing, pay attention to the position on the house and any wind shadows.