The Latest from the Energy Vanguard Blog

bathroom-remodel-exterior-wall-insulation.jpg
Posted by Allison Bailes on May 23, 2016
When I began remodeling my master bathroom last month, I found the exterior wall ripe for some serious improvement. It had a number of problems, and I was excited to find them. It was worse than I imagined in some ways. The photo below shows the wall partially opened up.
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thermal-bridging-framing-insulation-r-value.jpg
Posted by Allison Bailes on April 29, 2016
We talk about R-value all the time. "I've got an R-19 wall," or "Code requires R-38 in my ceiling." But what are those numbers? As it turns out, when we talk about R-value we usually give the R-value of the insulation. That's the case with both of those statements above. But what's the real R-value...
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Posted by Allison Bailes on April 20, 2016
Well, I really stirred things up with my last article on insulation and global warming. My intention was to explain why Alex Wilson's results could be doing a disservice to the green building community. In the end, I was rightly accused of have done a disservice myself. So, here goes with part...
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wall-condensation-exterior-vs-interior-insulation-anthony-cox.jpg
Posted by Allison Bailes on April 4, 2016
A couple of weeks ago I caught up with Anthony Cox at the Air Barrier Association conference in Baltimore. You may know Anthony as the inventor of the House of Pressure, a great model for demonstrating backdrafting, zonal pressure differences, and other building pressure phenomena. Well, now he's...
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human-brain-Joseph-Vimont-500.jpg
Posted by Allison Bailes on March 8, 2016
I've been reading a lot of BS lately. No, I'm not talking about blood sugar. It's brain science that's captured my attention. Understanding how the human brain works, why we do the things we do, and what common illusions often lead us astray. What I want to talk to you about today, though, is foam...
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new-tract-home-construction-green-building-advice.jpg
Posted by Allison Bailes on February 15, 2016
Let's say you've bought a lot in a new development and are having a tract home built. You want the home to be as energy efficient, comfortable, and green as possible. Your builder offers only a few options, like high-efficiency heating and air conditioning systems, but you want more. That's the...
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old-home-moisture-problems-peeling-paint.jpg
Posted by Allison Bailes on February 5, 2016
New Orleans is the home of jazz, Mardi Gras, and rot. I grew up about 70 miles southwest of NOLA so I know a little something about the rain and the swamps and the muggy air. It makes it tough on buildings because the moisture comes from so many directions, but it is possible to control moisture...
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frost-on-roof-heat-loss-to-attic-600.jpg
Posted by Allison Bailes on January 27, 2016
It was the best of times, it was the worst of times, it was the season of cold, it was the season of heat, it was the ignorance of what was right in front of us, it was the opening of our eyes, we had warmth in our homes, we had warmth in our attics — in short, the period was so like the present...
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hvac-duct-monster-ductopus-air-flow-problems.jpg
Posted by Allison Bailes on December 29, 2015
The year 2015 is almost finished. I've written 69 articles here in the Energy Vanguard Blog. I've been to a bunch of conferences and talked to a lot of people. A lot of thoughts about building science, energy efficiency, indoor air quality, and more have gone through my head. As I sit here at the...
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attic-kneewall-fiberglass-insulation-and-air-leakage.jpg
Posted by Allison Bailes on November 24, 2015
I read a lot of stuff online about insulation and air barriers and other building science topics. I see a fair number of articles bashing certain products or materials. Sometimes it's because the author sells a competing product. Sometimes they just don't like a product. Take fiberglass insulation...
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