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

Case study of an improperly designed energy retrofit project where airtight windows and other measures were taken without an integrated approach. The failure to upgrade the building envelope resulted in mold formation due to persistent condensation inside the building walls & ceilings.

Emu Passive

An image is worth a thousand words.

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.

These photographs are courtesy of our friend and colleague Damiano Chiarini of Studio Rinnova, who joins us in emphasizing the importance of an integrated approach to energy retrofits in order to avoid disasters like this one. He was called in to consult the building owner on possible solutions after this attempt to upgrade the…

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7 thoughts on “A Disastrous Case Study: How Replacing Windows Alone Can Lead to Mold

  1. Hey! I realize this is sort of off-topic however I had to ask.
    Does managing a well-established website like yours require a massive amount work?
    I’m completely new to blogging however I do write in my
    journal every day. I’d like to start a blog so I can share
    my experience and views online. Please let me
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  2. You actually make it seem so easy with your presentation but I find this
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    I’m looking forward for your next post, I will try to get the hang of it!


  3. We really have trouble with these issues on the Gulf Coast. Too many folks plan building envelopes around heating issues; while our primary energy cost is AC to remove our heat and humidity.


  4. Pingback: A Disastrous Case Study: How Replacing Windows Alone Can Lead to Mold | My Blog

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