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Welement Hugo.Stay

Hostel timber-concrete hybrid façade elements

Client Profile

KRC Ehitus is an Estonian main contractor based in Tartu, Estonia. They have built different projects from residential to kindergartens and have used a hybrid timber-concrete system also previously on an office building. The owner/landlord of the building is devel- oping hostel style rental apartments with a unique modern design approach.


Because of the central location in the city and a rela- tively small site, managing the logistics and assembly sequences needed coordinating with different parties. Also, the first floor was over 4m high, which meant special transportation and production solutions. As with all timber-concrete hybrid projects the critical part is how the two parts – concrete structure and prefab timber elements - fit together and since this project did not have a BIM model, we could not use the clients IFC model as a reference.

“Since the construction time of the façade was during a cold and relatively wet winter period, building the elements in factory conditions made a lot of sense from a quality perspective. Besides the quality control benefits the offsite approach allowed us to minimize and control the actual site time by getting the box insulated and weatherproof as fast as possible and start with interior work. Our site crew was very satis- fied with the overall solution”

Siim Kroodo, CEO of KRC


  • Construction speed — the site work could concentrate on the concrete works while the façade elements were produced in parallel in the factory.
  • Building quality — Since the assembly of the elements happened during cold months, weather protection was important.
  • Window assembly — to assemble all the windows in the factory to ensure the best quality for taping and insulation of the joints.


Together with the BoKlok team, we have managed to set up a building and ordering system that signifi- cantly increases the efficiency of all parties within the supply chain, starting with design and ending with assembly, while maintaining high quality and safety standards. With a transparent flow of data between both parties we can continuously improve the system in a non-zero-sum mentality.

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Lauri Tuulberg

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