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THERM-opti-BALCONY: Thermal Optimized Renovation of Balconies

Pre-cast cantilever balconies represent a particular problem in the thermal renovation of buildings. The central goal of this project is the development of practical and cost-effective mounting solutions for the thermally decoupled reconstruction of balconies on building frontages and achieving a significant increase in the energy performance of the thermal renovation measure.

Short Description

Status

ongoing

Summary

Starting point/motivation

As far as attaching a thermal insulating posteriori on exterior walls is concerned in the course of the thermal renovation of existing buildings, pre-cast cantilever balconies represent a particular problem.

According to the state-of-the-art balconies, the common custom is

  • to tear down the balconies before the attachment of the thermal insulation and to reconstruct them thereafter as a self-supporting construction with posts on distinctive foundations, which is technically not feasible in many cases or aesthetically unwelcome, or
  • to preserve the existing balconies which leads to severe thermal compromises because the balconies form heat bridges through the newly mounted insulating, or

  • to omit the balconies after the thermal restoration of the building which leads to a blatant deterioration of the indoor environment quality and to a loss in value of the real estate.

Contents and goals

The project at hand aims to develop solutions which facilitate the thermally decoupled rebuilding of balconies on thermally renovated building fronts, thereby focusing on optimum practicability and cost-effectiveness.

Methods

To reach these goals, the project team considers mounting systems based on concrete screws to be the most promising approach. Because concrete screw connections of overhanging plate-like building components like balconies have not been investigated systematically up to now, the project breaks technical new ground and a number of fundamental scientific investigations and development work needs to be executed.

Expected results

This project is expected to result in practical and cost-effective mounting solutions for the thermally decoupled reconstruction of balconies on building frontages and to achieve a significant increase in energy performance of the thermal renovation measure.

Project Partners

Project management

University of Innsbruck, Institute for Structural Engineering and Material Sciences - Unit for Concrete Structures and Bridge Design

  • Univ.-Prof. Dr.-Ing. Jürgen FEIX
  • Dipl.-Ing. Nikolaus FLEISCHHACKER, BSc.

Project partners

Contact Address

Dipl.-Ing. Nikolaus FLEISCHHACKER, BSc.
Technikerstraße 13
A-6020 Innsbruck
Tel.: +43 (512) 507 63306
Fax: +43 (512) 507 63399
E-Mail: nikolaus.fleischhacker@uibk.ac.at
Web: http://www.uibk.ac.at/massiv-und-brueckenbau/

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