A Disastrous Case Study: How Replacing Windows Alone Can Lead to Mold

Example of mold - photo by Damiano Chiarini.

In our previous articles, we have cautioned that an energy retrofit should be approached with an integrated, whole-building approach, and by a professional with experience in calculating and simulating thermal envelopes. The photos below show what happened to one family’s home when they decided to do an independent partial energy retrofit, without consulting a qualified professional. In this case, they decided to replace the old windows of their house with newer, high performance windows, hoping that they would be able to reduce their energy consumption.

Mold and condensation problems

Example of mold - photo by Damiano Chiarini.

Mold and condensation on the interior surfaces of a house’s thermal envelope is a self-evident proof of poor quality and lack of comfort. It can happen on walls, roof, slabs and so on. These phenomena are symptoms of degrading building quality, and have immediate direct consequences on indoor air quality, health of the occupants and the overall comfort inside the house.

What is a ‘thermal bridge’?

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In our articles, as we write about Passive Houses, thermal comfort and energy efficiency, we often assign great importance to the term ‘thermal bridge’.

We’ll try to explain here what all the fuss is about.

Energy effiency retrofit: external insulation or new doors and windows?

Via Goti - Emu Architetti  Nov 9, 2010 12-003

The future of the construction industry in Italy is in the energy efficiency improvement of our existing building stock.

We are often asked whether you should invest in external insulation or in new windows for the highest return of investment, as far as comfort and energy savings. The short answer is neither or both. Allow us to explain…

Why an Italian regional energy certification is not enough to guarantee the quality of a building.

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From a purely commercial point of view, the Italian real estate market seems to now understand the concept of the energy certification of buildings. However, the certificate itself is not sufficient to ensure the comfort and quality of the building. Here’s why: Case-Study: an ‘Emilia Romagna Class B’ house Sometimes friends, family or potential clients […]

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