Master Builders, Designers and Investors

Timber Structures 3.0 AG


Timber Structures 3.0 AG
Niesenstrasse 1, 3600 Thun
Tel: (+41) 058 255 15 80

Developed by Timbatec

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Blümlimattweg 15, Thun



At Blümlimattweg 15 in Thun, Switzerland's first apartment building with a basement made of wood was built. Thanks to TS3's joint grouting, the floor slab and basement can be built from cross-laminated timber panels.

Visualization multifamily house Blümlimattweg zoom
Visualization multifamily house Blümlimattweg
Wooden basement zoom
Wooden basement
Cross section multifamily house zoom
Cross section multifamily house

The project 

An apartment building full of innovations was built in Thun. No concrete and no steel were used in the entire house with 5 residential units. The house in Thun is also the living lab of the DeepWood research project together with the Lucerne University of Applied Sciences and Arts and the Bern University of Applied Sciences. With DeepWood, the planning methods Building Information Modeling (BIM) are being further developed. 

The TS3 panels in the basement rest only on load-bearing columns. The interior walls are not load-bearing. This makes the basement very flexible in terms of use and, thanks to the pleasant indoor climate due to the visible and tangible wood, it can be used in a variety of ways.

The construction

The consequent renunciation of concrete required innovative solutions, especially for the construction of the basement. Cross-laminated timber panels lie on top of a 160 mm thick insulation board. Black insulation encases the wood for moisture protection. TS3 joints connect the individual CLT panels together.

The challenges

The Blümlimattweg was the first time a 45-degree joint was grouted on a construction project. TS3 only had experience with this from research projects. Another challenge of this project was the cold temperatures during grouting. For the first time, winter construction measures had to be developed and used. The joints were heated locally.

- Number of floors: 3  

- Gross floor area: 998 m2  

- Glulam: 178 m3  

- TS3 technology: 360 linear meters of joints

HLS Architekten, Zürich

Building Owner
Yamanakako AG, Thun

Timber Construction Engineers
Timbatec Holzbauingenieure, Zürich

Construction Management
Stuber Holzbau, Schüpfen

Nils Sandmeier, Biel


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