House designed on Passive House principles survives Cali wildfire


Found on Reddit:

“Passive House is considered the most rigorous voluntary energy-based standard in the design and construction industry today. Consuming up to 90% less heating and cooling energy than conventional buildings, and applicable to almost any building type or design, the Passive House high-performance building standard is the only internationally recognized, proven, science-based energy standard in construction delivering this level of performance. Fundamental to the energy efficiency of these buildings, the following five principles are central to Passive House design and construction: 1) super-insulated envelopes, 2) airtight construction, 3) high-performance glazing, 4) thermal-bridge-free detailing, and 5) heat recovery ventilation.“

More on this design principle:
https://passivehouseaccelerator.com/articles/building-forward-in-the-face-of-fires

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I wonder if it has a blue roof? :man_shrugging:

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That Reddit post is misleading. Energy efficient construction does not make your home wildfire safe. Wood roof shingles, decks that allow embers to get under them, low conifer trees and brush near the home, plus more issues make both an energy efficient and a “regular” home a wildfire risk.

We have a local Firewise Program, and the National Fire Preparedness Association is involved with these issues on the national level.

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If it had a blue metal roof or a red metal roof, that would be good for fire preparedness. Lots of red metal roofs throughout western Ontario, BTW. I don’t see many blue roofs.

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Where are we on this subject? Where would I learn more?

Example:
Compared to the roof vents on most houses, a Passive House has just a single air intake.

Cutter pushed for the creation of Colorado’s Wildfire Resiliency Code Board. It will identify areas with the highest wildfire threats and, for the first time, enforce mandatory wildfire construction codes.

Any guidance would be appreciated.

General Interest on the subject:

But not so much for energy efficiency, eh?

Apparently, it is all about embers entering the attic ventilation system of a typical home, whereas a passive house does not have traditional ventilation. Beyond that, I see no additional resistance to fire.