As cities are expanding, there is a need for buildings to meet expectations regarding longevity. But due to changing needs and increasing land values, flexibility is just as important. When you consider the embodied energy in demolished buildings, the fact that wood is adaptable is a significant advantage.

The rise of CLT however offers an approach that builds upon the strengths of concrete in a quite literal sense – engineered wood extensions slapped on top of existing buildings. As wooden structures are light, there are often margins for building additional stories or extensions to roofs to change and modernize the existing building. In such cases, the use of prefabricated wooden components is often suitable. Naturally the design must be verified so that there is a margin for absorbing the additional vertical loads and ensuring horizontal stability.

Magasin 113

Magasin 113 in Gothenbourg is a proposal transformation of an old warehouse. The structure will be re-inforced and raised using a post and beam strcuture. By MVRDV and BSK Architects.

Render MVRDV

Grand Hotel

Grand Hotel right at the seafront with views of the historical Stockholm is being raised two storeys with a wooden structure. Design by Sandell Sandberg.

Photo Sandell Sandberg


Trikåfabriken is a5-storey extension to an old factory from The parking garage Ekorren in Skellefteå, three storeys for parking on top of the stores. The floors are covered with polyuretan. By AIX Architects and Plusshus. 1920 in Stockholm. By Tengboms.

Render Tengbom

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