orange iconOperational Response Level: Restricted ›

Research Partnerships & Innovation

Thermally Broken Concrete Balconies Project

August 14, 2017

This project focuses on developing cost-effective systems for the implementation of thermally broken concrete slabs for residential mid/high-rise construction.


Traditionally, concrete balconies in mid/high-rise residential buildings are designed as an extension to the floor slab, constructed as a one or two-way reinforced concrete slab cantilevered out past the building’s exterior wall.

Without a thermal break, the balcony easily conducts heat, causing a significant amount of heat loss in the winter, leaving the floor slab and window-wall assembly considerably cooler than the interior temperature, and resulting in condensation.

If not properly controlled, materials eventually start to degrade, reducing the integrity and safety of the structure, and even compromising the indoor air quality from mold growth.

Our Research

  • This project includes experimentally investigating different forms of thermal insulation materials and different types of rebar and then performing thermal testing and analysis, and structural testing on these materials. BETAC is providing the laboratory space for casting samples and the environmental chambers needed for the thermal testing.
  • The main project team includes the College, the University of Manitoba, Crosier Kilgour & Partners and SMT Research.


The first phase of this project started in June, 2016, and is due to complete in August, 2017. The completion of phase two is to be determined.