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Electric sun sail for a Genea Bogenhaus – when architecture allows no compromise


The genea Bogenhaus in Upper Austria is an architectural statement: round forms, large glazing and a clean, pared-back design. That was precisely the challenge. A classic awning or pergola would have disrupted or even ruined the architecture. At the same time, functional shading was needed to temper the interior on hot days and make the terrace usable.

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Aufrollbares Sonnensegel von LET bei Bogenhaus
Elektrisch aufrollbares Sonnensegel von LET bei Bogenhaus
Vollautomatisches Sonnensegel von LET bei Bogenhaus

Innovative shade for an extraordinary home​

The genea Bogenhaus stands for modern living in harmony with nature. With its earth-sheltered construction and generous window areas, it offers a sustainable living concept with the highest comfort. To keep the rooms pleasantly cool in summer and make the most of solar energy in winter, an electric sun sail was installed. The innovative solution not only guards against overheating but extends the living space stylishly outdoors. Function, design and sustainability unite here into one perfect whole.

Maßgefertigtes Sonnensegel von LET bei Bogenhaus

Design concept



The solution: a precisely planned sun sail that adapts to the form of the house rather than working against it. The chosen Dreieck sail shades the glass areas in a targeted way while creating pleasant shade outdoors – depending on the sun’s position in spring, autumn and high summer.

Challenges and solutions


The sun sail deliberately holds back and lets the form of the Bogenhaus shine. No visible dominance, no overlay – simply a solution that complements. A larger Doppeldreieck variant was originally planned. The final choice fell on a single sail that meets the essential needs and puts the architecture firmly centre stage.

Weatherproof, wind-resistant LET sun sail at the Bogenhaus
Electric extending LET sun sail at the Bogenhaus
Premium retractable LET sun sail at the Bogenhaus
Modern retractable LET sun sail at the Bogenhaus
Retractable LET sun sail for the Bogenhaus
Electric retractable LET sun sail for the Bogenhaus

Project highlights

NUM 1

Form follows architecture

The Dreieck sail was fitted exactly to the Bogenhaus's round architecture and flows in seamlessly, rather than working against the form.

NUM 2

Targeted glass protection

The sail shades the large glass areas in a targeted way and tempers the interior – by the sun's position in spring, autumn and high summer.

NUM 3

Smart-home control

Thanks to smart-home connectivity, the sail responds automatically to the weather and can be adjusted anytime by app or switch.

NUM 4

Design meets efficiency

Long-lasting, weatherproof materials deliver lasting comfort and unite design with energy efficiency – with no compromise on looks.

More references

  • Modernes Landhaus mit Sonnensegel über Pool und Terrasse an einem strahlenden Sommertag, Luftaufnahme

    The sun sail as part of the architectural concept

  • Trapez-Sonnensegel von LET über einer Terrasse bei Berlin, bei Tag

    Villa by a lake near Berlin

  • Beschatteter Liegebereich unter dem Doppeldreieck-Sonnensegel

    Berlin roof terrace with TV Tower view

  • Sonnensegel über der Dachterrasse eines modernen Hauses in Berlin, Luftaufnahme mit Garten und Pool

    Sun sail on a roof terrace in Berlin

  • Pool Sonnensegel Trapez Ausgefahren

    Smart-home sun sail via app & voice

View references

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