A three-storey apartment building in Saue has been completely renovated with additional insulation elements prefabricated at the factory. Such an experience could become a model for thousands of multi-apartment buildings with poor energy efficiency and microclimate built before the 1990s all over Estonia.
The apartment building on Kuuma Street in Saue can be an excellent example of the renovation of old apartment buildings.
Apartment buildings built before the 1990s have similar problems – high energy consumption, poor ventilation and microclimate, and uneven temperatures. Compared to conventional insulation of external walls using scaffolding, the new method significantly reduces renovation time.
Development project in sleeping areas
According to Professor Targo Kalamees of the Tallinn University of Technology, a pilot renovation project using additional thermal insulation elements prefabricated at the factory was implemented in two buildings – a five-story TTU family dormitory and a three-story apartment building on Kuuma Street in Saue.
“Given our housing stock, the next development project should be the implementation of a similar renovation solution in the residential areas of large cities – for example, in Lasnamäe and Õismäe in Tallinn or Annelinn in Tartu,” said Professor Kalamees.
The renovation work on the apartment building at Kuuma 4 was carried out by Timbeco, a company engaged in the production of building elements and modules, which organized the assembly of insulation modules at the plant in Tydva. The duration of the renovation, which took place with the participation of TTU construction experts, was nine months.
“For us, this apartment building, selected as part of the Drive0 pan-European innovation project, was a unique learning opportunity for circular economy renovation,” said Timbeco Ehitus Project Manager Eero Niegumann. “The goal is to renovate the apartment building as optimally as possible – in the shortest possible time and using building materials that could be reused after the end of the building’s useful life.”
Bike racks made from old heating pipes
Construction debris and waste generated during the reconstruction process were disposed of in such a way that they can be reused.
For example, bicycle racks for the residents of the house were made from the old pipes of the heating system, recycled aggregate concrete was used to fill the ramp, an old tin roof was installed on a farm in South Estonia, old windows were repaired and reused in the dachas of the apartment owners, and obsolete cast-iron radiators carefully cleaned and installed on the stairwells of the building.
The renovation of an apartment building in Saue was supported by the European Union’s Horizon 2020 Drive0 project and the Foundation for Enterprise and Innovation (formerly KredEx). At the same time, KredEx is implementing a pilot factory reconstruction project, unique for Europe, using the same method, but on a larger scale. Work in the first houses should begin this year.
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