The first sliding window system for high-rise buildings: air-lux passes impermeability tests in the USA

air-lux sliding windows have recently undergone specific tightness and earthquake tests in the USA, to test the use of sliding windows in high-rise buildings. We are pleased to report that the air-lux...

Innosuisse - the promising cooperation with the ZHAW

Since 2019 Krapf AG has been working together with the ZHAW on an innovation project with the aim of optimizing the air-lux sealing system and generating additional know-how in the field of sealing...

The prize that makes innovation visible: the air-lux pivot door wins German Innovation Award 2020

The air-lux pivot door wins an award for its outstanding innovative performance: It is one of the winners of the German Innovation Award 2020 in the category #W2 Excellence in Business to Business -...

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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