The heritage-listed swimming baths dating from 1895 were converted into thermal saltwater baths and won an award for their wooden roof structure

The Kaifu Baths are the oldest swimming baths in Hamburg. As a result of structural deficiencies and the threat of the 115-year-old roof structure failing, the swimming hall was in dire need of modernization. New thermal saltwater baths were therefore created inside the historical outer walls. The saltwater pool is a jointless waterproof concrete construction integrated into the existing swimming pool. The monument preservation authorities insisted that the original shape of the arched roof be retained. Given the high ambient humidity and the six-percent salt content of the saltwater baths, a wooden structure using a veneered laminate was chosen. The main trusses span 14 metres with a thickness of mere 13 cm. The few supporting steel components were dimensioned such that they guarantee structural stability for many years even if the corrosion protection fails. The entire space under the roof is accessible for maintenance. All wooden sections were industrially prefabricated and rapidly assembled using a modular system. The supported LVL roof panel functions as a membrane to brace the swimming baths’ 27.5-metre-long exterior masonry walls.

ClientBäderland Hamburg GmbH
ArchitectsMRLV Architekten
Project dataGFA: 4,100 m², Historical building dating from 1895
AwardDeutscher Holzbaupreis 2016

Our services

  • Feasibility study
  • Structural design
  • Status analysis of the old building
  • Restoration planning

Download the project description PDF

Other reference projects in this field of service

Whitney Museum of American Art

Kaifu Baths

Congress Center Hamburg


Bundestag building at Schadowstrasse 4

Building complex on Strandkai

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Hamburg Süd

European XFEL headquarters

International School Hamburg

Westfield Hamburg-Überseequartier

Hamburg Municipal Authorities Administrative Head Office

Cruise Center II Altona

Vogtlandkreis District Administration Office

Bikini Berlin

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