Milestones
Krapf AG has stood for expert metal and façade construction since 1964.
1994
The company moves into the new building in Engelburg, handover to Heinz Sauter
2004
Air-Lux Technik AG develops the air-lux sliding windows system
air-lux is a glass façade system that sits flush with the floor and ceiling and features large-surface windows up to 18m2 and a unique sealing method. With air-lux, Krapf AG offers architects, façade planners and building owners a versatile window façade system that is as architecturally and aesthetically appealing as it is structurally sound.

2005
Major order for 3 high-rise residential buildings with air-lux, Waldheimstrasse, Zug

2008
IFT Rosenheim certification, break-in resistance class WK2/WK3
2010
Received patent for air-lux
2011
Minergie module for air-lux sliding windows and tilt and turn windows
2012
Krapf AG has 80 employees
2012
Launch of air-lux connect, fusion of aluminium with wood or bronze

2013
High-rise façade B125 (Baarerstrasse, Zug)
The first high-rise residential building in Switzerland to use a sliding casement façade. Krapf AG creates a façade solution using a combined glass and natural stone façade including external shading. Height: 56 metres. 18 floors fitted with 136 horizontal, pneumatically-sealed sliding air-lux windows

2014
Two high-rise façades (One-One, Cham)

2014
First project in China

2014
Company anniversary, 50 years of Krapf AG
2017
air-lux sliding windows as a special solution
Diakonie Bethanien Zurich: 350 automatic air-lux sliding casement windows installed in the exposed concrete façade (picture frames). Innovative and urban multi-use of a 12-storey, 40-metre high-rise building. Customised architectural and technical design developed by Krapf AG for the architects and builders.
