Score points worldwide with Engelburger Power.

Whether a villa in Majorca or a special order in Los Angeles: as one of the leading Swiss metal and façade construction companies, we develop innovative solutions for every challenge with our patented air-lux system.

Lukas Knechtle, Managing Director and Owner, air-lux Technik AG

“The success of air-lux is based on our team spirit. Whether developers, installers or sales partners – we think of ourselves as a family that can achieve the exceptional together.”

We stand for three values.

These three values define Krapf AG and air-lux – this is how people know us, how we work, and how we ensure our success:

Clear

We set high standards for ourselves and our work. With decades of expertise from hundreds of projects, we know exactly what matters – down to the smallest detail. Working with us means relying on a partner who delivers sustainable solutions. Structured processes and transparent communication at eye level build trust and ensure efficiency – both within our company and in collaboration with our clients.

Competent

With expertise and innovative spirit, we embrace every challenge and remain open to new ideas and bold visions. Whether straightforward or highly complex, every project demands tailor-made solutions. That is why we remain flexible and adapt our services precisely – from the initial consultation through to installation.

Creativ

Creativity is the key to unique solutions. With fresh ideas and innovative approaches, we design tailor-made concepts in glass and metal that are both functional and aesthetically convincing. As a full-service provider, we combine creative thinking with precise execution to realize ambitious projects worldwide at the highest level of quality. In doing so, we always respond to the individual needs of our clients and partners – without compromise.

Creativity, technology and craftsmanship perfectly combined

We believe that there are no architectural limits to glass façade construction. We want every client and architect to be able to make their visions a reality – without compromises. That’s why we developed air-lux: our glass façade system, with sliding windows flush to the floor and ceiling and a patented air-assisted sealing concept, combines creativity, technology and craftsmanship – in top quality. From individual sliding windows to multi-storey glass façades. In this way, we give architects all the freedom to interpret and define light and space exactly according to their ideas.

Competence in metal and façade construction since 1964

In 1964, Gebhard Krapf founded Krapf AG with two employees. Thirty years later, he handed the company over to Heinz Sauter. In 1999, Krapf AG moved into its new office building in Engelburg, St. Gallen. A year later, it already employed 30 people. In 2004, Krapf AG developed the air-lux glass façade system, which was flush with the floor and ceiling. With large sliding windows of up to 18 m² and a unique patented sealing concept, it caused a sensation far beyond the Appenzell region.