Krapf AG has stood for expert metal and façade construction since 1964.


The company moves into the new building in Engelburg, handover to Heinz Sauter


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.


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


IFT Rosenheim certification, break-in resistance class WK2/WK3


Received patent for air-lux


Minergie module for air-lux sliding windows and tilt and turn windows


Krapf AG has 80 employees


Launch of air-lux connect, fusion of aluminium with wood or bronze


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


Two high-rise façades (One-One, Cham)


First project in China


Company anniversary, 50 years of Krapf AG


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.

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