A number of independent groups have conducted studies of our balcony glazing. These studies have found that balcony glazing can help reduce heat consumption as well as provide energy savings.

Our balcony glazing system has also been shown to reduce the need for maintenance and repairs on outdoor balconies.

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The balcony glazing study

In August 2010, Kimmo Hilliaho studied the energy effects of balcony glazing at the Tampere University of Technology.

The research was conducted in Finland and supplemented by reference calculations from Germany. The heating energy consumption of glazed and unglazed balconies was compared by using field measurements and computer simulations. In addition, the study sought to ascertain how balcony type, thermal insulation and direction affect temperatures.

Finland study results

The results of the Finland study show that taking compensation air from a glazed balcony increases energy savings from the glazing. In the best case, glazed balconies function as efficient windbreaks, enabling owners to reduce temperature by as much as 1°C in the rooms adjacent to their balconies. This allows owners to save energy while maintaining comfort levels.

The glazing of recessed balconies (with walls on both sides) provides even more energy savings than glazing of protruding balconies (L- or U-shaped).

Savings for south-side balconies are slightly higher than those for balconies facing other directions. However, the savings gained by both types are substantial. The study revealed that the size of the gaps between glass panes has little impact on energy savings.

In all cases, energy savings were maximized by keeping balcony glazing closed in winter and open in summer.

Germany study results

The Finland research was supplemented with energy calculations of balconies in Berlin that were comparable to the Finnish balconies under research.

In the Berlin homes, heating energy savings gained through the use of balcony glazing varied from 5.6% to 12.0%. Energy savings were most significant with south-facing balconies and with air supply coming from the balcony.

Having air intake from the balcony, instead of from directly outside, was the most significant factor. On average, heating energy savings in Germany amounted to 8.2%, which is even more than the energy savings calculated in the Finland study.

Canada study results

Similar studies in Canada have returned even more impressive results. We’ve seen energy savings of up to 18.3% in Vancouver and up to 15.9% in Toronto—surpassing the findings of the Germany and Finland case studies! 

Conclusion: Balcony glazing pays off

In addition to comfort, properly designed and installed balcony glazing systems provide residents and apartment owners with financial benefits.

In particular, providing high-rise blocks built in the 1960s and 1970s with balcony glazing really pays off. Substantial savings could also be obtained in new high-rise blocks with a compensation air intake through the glazed balcony. 

Balcony glazing reduces maintenance and repairs

Addition research, conducted by D.Sc. (Tech.) Jussi Mattila, demonstrated that balcony glazing has a protective effect. The research results showed that balcony glazing can postpone the need for balcony renovation by six to ten years!

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