We are always interested to express one architecture during the day (solid) and another one at night (transparency). Faxx building, Tilburg... 4

Working in the office on size, color, scale, perforation, density and transparency for the printed leafs on the glass to reduce direct sunlight through the glass facade. Faxx building, Tilburg... 3

Printed leafs on the glass to reduce direct sunlight through the glass facade. 178 different prints. Thanks to Martin Eisler no two panels are the same. The Faxx building, Tilburg (this is also one of the early "open escape stairs" buildings).

Printed leafs on the glass to reduce direct sunlight on the glass facade. 178 different prints. Thanks to Martin Eisler no two panels are the same. The Faxx building, Tilburg

Apartment lobby Rijswijk. You enter and walk towards the light. Not the other way around.

These are the translucent and the transparent versions of the fritted facade of the Library in Rijswijk.

Our first fritted glass facade was 25 years ago for the library in Rijswijk. Positive, Negative, transparent positive and transparent negative and non fritted glass was used. 1

Facade study for twin office buildings in Nootdorp

Facade studies student housing DUWO the Hague.

Facade studies: Sugar Factory, Halfway

Facade detailing for the Amvest Headquarter in Amsterdam: Double story naturally ventilated climate facade. The underside is open, the top is regulated by louvers. In the winter they are closed to create a heat pillow, and in the summer open for maximum airflow.. 2

Facade detailing for the Amvest Headquarter in Amsterdam: We thought the whole project through in the old fashioned way: In ones brain. This created 208 variations in the details. All drawn by hand on a scale of 1:5. Only 54 details made it into the BIM set. So the hand sketches were often consulted for the more obscure intersections. 1

Facade study: Amvest Amsterdam, early sketch

Facade studies: Patent- and World Record holder for thinnest double glass facade with Ulrich Knaack and Octatube.....5

Facade studies: Patent- and World Record holder for thinnest double glass facade with Ulrich Knaack and Octatube....4

Facade Mock-up for InHolland University Delft. Patent- and World Record holder for thinnest double glass facade with Ulrich Knaack and Octatube...3

Facade studies: InHolland University Delft. Patent- and World Record holder for thinnest double glass facade with Ulrich Knaack.. 2

Facade studies: InHolland University Delft.1

Facade studies: 3D printed model. Inholland University on top of the old Ringers Chocolate factory......6