Stonecon Ltd

Kohteen perustiedot

  • architect Alvar Aalto
  • real estate owner Deka Immobilien GmbH (since 9.6.2008)
  • buiding works completed in 1961
  • original facade cladding was made of Carrara Bianco marble
  • original facade in very bad condition due to deterioration of marble
  • facade renovation was carried out during 2007-2008
  • original marble was replaced by Branco Estremoz marble
  • owner during the renovation project: Stora Enso Oyj
  • project management and supervision: Stonecon Oy
  • stone technology consulting: Stonecon Oy
  • architect: Evata Finland Oy
  • structural engineering: Insinööritoimisto Konstru Oy
  • stone contractor: Pohjolan Kiviasennus Oy

Rakennusprojektin erikoispiirteet

  • preservation of Alvar Aalto cultural heritage was taken into account throughout the project
  • due to the central and important location no changes in appearance were desired
  • due to ongoing redesign process of the city plan construction activities were prohibited
  • process for choosing the new facade material was very complicated
  • goal was to find a natural stone material with better durability than the original
  • Stora Enso planned to replace marble with light granite, but permission was denied
  • most challenging part of the project was quality control during marble production
  • original stone fixings could be utilised because they were generally in good condition
  • original thermal insulation made of cork, was preserved
  • copper roofing, terrace structures and metal details in the facade were also renewed
  • during facade renovation also wooden (teac) window frames were renovated
  • during renovation works the building was normally in use
  • area of facade cladding was 2500 m2