The Raffstore is one of the most popular exterior sun-shading systems in Switzerland. Because it sits in front of the glass, it blocks solar heat before it even reaches the window – far more effective against overheating than an interior curtain or blind. The slats are usually made of coated aluminium and come in various profiles (C- or Z-shaped) and colours.\n\nToday a Raffstore is almost always operated electrically via a motor, often with a switch, remote control or smart-home integration. The tilt angle of the slats controls how much daylight enters: nearly closed for glare protection at a screen, slightly open for soft light while keeping a clear view outside. Many systems retract automatically in wind to prevent damage.\n\nA Raffstore is needed wherever rooms should not overheat in summer – in new buildings it is often planned in from the start, while in renovations it is retrofitted as a surface-mounted or built-on box. It is especially worthwhile on south- and west-facing façades and on large glass surfaces.\n\nLook for wind-stable slats with guide rails (not just cable guides), a quiet brand-name motor, a clean plastered-in or surface-mounted solution, and check cantonal rules on façade changes. Common mistakes: under-dimensioned wind sensors, cheap motors and installation without proper sealing.
External venetian blinds
A Raffstore (external venetian blind) is an exterior sun-shading system made of horizontal, adjustable metal slats that can be raised, lowered and tilted in front of a window. This lets you control sunlight, glare and heat gain steplessly without fully darkening the room.
Example
A family in a newly built flat in Winterthur complains that their living room with large south-facing glazing overheats badly in summer. After Raffstore blinds are installed, the room stays pleasantly cool during the day because the aluminium slats catch the sun before it reaches the glass. Using the remote control, the family tilts the slats in the morning so daylight enters while the view of the garden is preserved.
Frequently asked
What is the difference between a Raffstore and a roller shutter?
A roller shutter is a closed slat curtain that darkens the window and lets in almost no light when lowered. A Raffstore has individual adjustable slats that let you regulate light and view steplessly without fully darkening the room. Both offer good heat protection, but the Raffstore is more flexible with daylight.
How much does a Raffstore cost?
The price depends on window size, slat type, motorisation, control system and installation type (new build or retrofit). The number of windows and the effort for the electrical connection and scaffolding also matter. It is best to obtain several quotes from blind installers in your region so you can compare services and prices.
Are Raffstore blinds wind-resistant?
Raffstore blinds with side guide rails are far more wind-stable than pure cable guides. A wind sensor that automatically retracts the system in strong wind is important to prevent damage. Have your specialist confirm the permissible wind class for your location and façade.