Large-area air-lux soundproof windows guarantee a noise-free summer

Especially in the summer months, many people in urban areas suffer from additional noise. In the cities, the streets are built and renovated, the neighbors mow their lawns and celebrate a barbecue and...

Pivoting door wins DETAIL Product Award 2019

The air-lux pivoting door once again proves its high quality and functionality: At this year's product award from the architecture magazine DETAIL, the large-surface swing door made of glass wins the...

air-lux sliding windows pass hurricane tests

air-lux sliding windows are hurricane safe and ready for the US market. With the hurricane tests of the Canadian company UL a further proof for the world's best tightness of air-lux sliding windows...

Reference properties

Zurich 7

Private residence in Zurich, flowing room sequence, organic shapes combined with strict contours.

Reference Grenzstrasse

Four residential studios in rear courtyard, steel beam supports with air-lux façade system


air-lux sliding windows – a product from Krapf AG, a leading metal and façade construction company

Innovation is our tradition. We have been using our extensive expertise and relationships with architects, façade planners, general contractors and building owners to implement solid, high quality and durable solutions for more than 50 years.

Krapf AG, your partner from Engelburg/St. Gallen

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