Structures made of membranes, steel, aluminium, wood and steel cables

Building envelopes in ETFE, glass and stainless steel mesh

Roofs, façades, event venues and exhibition buildings,
bridges and walkways, scaffolding
structures and sculptures

temporary, permanent and convertible

for private and public clients, architects, general design consultants, general contractors, manufacturers, steel constructors/fabricators, trade fair construction, façade and assembly companies

in Germany, Europe and worldwide


Freeforms with ETFE large cushions, a film about formTL design

1. April 2024 formTL turns 20 (Team)

The membrane roof of the health center in Masserberg is being completely renewed by formTL. The shape is being optimized and the detailing completely revised.


Lecture by Bernd Stimpfle at the University of Innsbruck
on November 6, 2023

The membrane roof of the Parkbad Velbert has been successfully renovated. It is something special to accompany the project over such a long period of time. We are pleased to have been able to support Stadtwerke Velbert in the sustainable maintenance of the roof.

The Minet Trail in Luxembourg is inaugurated, the mobile pavilion PumpitUp can be used for overnight stays.

For the Seebühne in Immenstadt, we regularly carry out a structural condition check of the stage roof. This year we were on site again.

Our brochure buildings 7 is finished and now also available to download


We support our customers Liebherr and PERI in reconstructing their exhibition stands for bauma 2022.

European Capital of Culture Esch-sur-Alzette in Luxembourg: First installation of the PumpITup Kabaisercher, one of eleven so-called hiking huts of the Minet Trail in the south of Luxembourg.

The Sursee municipal assembly of 14 March 2022 voted in favour of the special credit for the new construction of the station square – bus station, including the underground bicycle station and the renovation of the utility lines. This means that the people of Sursee will be able to vote on the matter on 15 May 2022.

10 years in the Kesselhaus Radolfzell: we have been working in the Kesselhaus since 23.4.2012. We feel very comfortable to this day.