Roller Shutters or External Venetian Blinds? Pros and Cons Compared

External sun protection keeps the heat out in summer, protects privacy and can even save heating energy in winter. The two most popular solutions are the roller shutter and the external venetian blind (also known as a raffstore). Which one suits you? Here are the key differences.

The roller shutter: robust and dark

A roller shutter consists of a curtain of individual slats – usually foam-filled aluminium or PVC. It is wound up in a box above the window. When closed, it darkens the room almost completely, making it ideal for bedrooms and children’s rooms.

• Thermal protection: in summer the heat stays outside. In winter, the air cushion between the curtain and the window forms an additional layer of insulation.
• Security: a closed roller shutter with an anti-lift device makes life harder for burglars.
• Robustness: roller shutters are unaffected by wind and weather.
• Price: usually cheaper than an external venetian blind.

The external venetian blind: light on demand

An external venetian blind consists of horizontal aluminium slats that can be tilted continuously. This lets you control exactly how much light and heat enters the room – while keeping the view outside. When raised, the slats disappear into a slim pack or invisibly into the façade.

• Light control: use daylight while avoiding glare on screens.
• Heat protection: external sun protection works much better than curtains or internal blinds, because the sun’s heat never reaches the glass.
• Design: the slim slats suit modern architecture and large glass areas particularly well.
• Limitations: in strong winds, external blinds must be raised – a wind sensor does this automatically. They do not darken a room completely.

Our recommendation

Many homeowners combine both systems: roller shutters for bedrooms, where complete darkness is wanted, and external venetian blinds for living areas, kitchens and home offices, where daylight and the view matter. For large glazed areas facing south and west, an external venetian blind is often the best defence against overheating.

Operation and smart home

Both systems are available with a strap, a crank or an electric motor. With a motor, roller shutters and external blinds can be controlled by radio remote, timer or smart home app. Sun and wind sensors move them automatically – even when you are not at home.

Don’t forget the type of installation

Front-mounted, top-mounted or concealed: the type of installation affects appearance, insulation and cost. We explain the differences in Roller shutter boxes: the three installation types. You will find our products under roller shutters and external venetian blinds.