Passive Architecture
Let's Know Things
Colin Wright
4.8 • 593 Ratings
🗓️ 20 February 2018
⏱️ 51 minutes
🧾️ Download transcript
Summary
This week we talk about thermal bridges, superinsulation, and the Leaky Condo Crisis.
We also discuss zero-energy buildings, standards of living, and quality of life.
This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit letsknowthings.substack.com/subscribe
Transcript
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| 0:00.0 | The Leaky Condo Crisis was a slow-burn disaster that took place primarily in British Columbia, Canada, from the mid-90s |
| 0:24.1 | until around 2007, though some litigation continues to this day. At the core of this crisis |
| 0:32.1 | is what's called Leaky Condo Syndrome, which is something that became endemic in British Columbia, built condominiums |
| 0:40.4 | and school buildings that were constructed between the late 80s and early 2000s in the region. |
| 0:47.3 | This crisis is multifaceted, but generally comes back to a few main issues. |
| 0:53.2 | First, during that period, the post-modernism architectural design |
| 0:58.0 | sensibility came into vogue in the area, meaning, quite suddenly, buildings with elements more |
| 1:04.4 | often seen in the Mediterranean region, and in Southern California, were popping up all over |
| 1:10.6 | BC. What that meant in practice |
| 1:13.2 | were roofs without eaves, stucco wall cladding, arched windows, and open walkways, all elements |
| 1:21.4 | that make a lot of sense in warmer regions, but which do not make much sense in chillier, wetter British Columbia, |
| 1:29.9 | a location in which these elements allow moisture to get places it shouldn't be, |
| 1:35.2 | resulting in water infiltration, leakage, and in some cases, rampant mold growth. |
| 1:42.6 | Second, regulatory codes had just changed before this period, and those |
| 1:47.3 | codes incentivized behavior that amplified this crisis. Namely, elements like roof overhangs were |
| 1:55.1 | included in floor space measurements, which in turn lowered the maximum possible internal |
| 2:00.6 | floor space the architects |
| 2:02.6 | had available to work with if they decided to include these overhangs that were handy |
| 2:07.5 | and rainy weather, and which allowed people outside to shelter under them. But more importantly, |
| 2:12.7 | structurally, these overhangs kept the rain from accumulating on the walls of the buildings, wearing those walls down over time and seeping into cracks and other flaws. |
| 2:22.9 | This regulatory change led to the widespread removal of these overhangs, and that led to increased moisture-related problems. |
| 2:32.9 | Contrarily, those outdoor open, uncovered walkways that so prominently |
... |
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