Home Building Is Like Skiing
I spent a few days in Colorado this past week. This was a rare trip for me: It wasn't for business or a conference. My wife, Elaine, and I went there on a belated honeymoon (we got married in 2009),…
building science
Vented Crawl Spaces and the Psychrometric Chart Are Not Friends
Really, the argument about whether you should vent a crawl space in a humid climate is over. Advanced Energy's research project from 2002 proved that closed crawl spaces outperform vented crawl spaces. A quick look at the psychrometric chart shows…
In or Out? Where Does the Paper Facing of Batt Insulation Go?
If you install fiberglass batt insulation* with a kraft paper vapor retarder in a home, which way do you face the vapor retarder? To the inside of the home or the outside of the home? For many building science questions,…
Those Annoying Imperial Units!
This morning I discovered that the Sustainable Building Association in the UK had linked to our site, writing: Energy Vanguard has a huge amount of excellent building science and especially air tightness info. Sadly it is US based which means…
The REAL Reason We Need Building Science
I LOVE this photo! It has nothing to do with building science. Or does it? As we humans have progressed from living in caves to mud huts to stone buildings to the stick-built structures many of us in the US…
The Thermal Bridge To Nowhere
Let's play a little game today. Take a look at that photo above. See anything that bothers you? No? Well, pretend that you're the heat in the house once everything is finished and people are living in it. Does that…
The State of Building Science in the Post-Mayan Non-Apocalypse
2013! Can you believe it? We survived the end of the Mayan calendar and are now living in what I like to call the post-non-apocalyptic world. I think that may well be the next hot genre for literature and film.…
Love Is More Important Than Building Science — A Thanksgiving Story
Perspective. It's a nice word. Fenestration may sound more sophisticated, but understanding the meaning of proper perspective will take you much further in life than all the building science in the world. With Thanksgiving upon us again, I thought I'd…
Innovative Net Zero — Appalachian State’s Solar Decathlon House
Twelve years ago, I discovered the Solar Decathlon. I was a new physics professor at a small university in Georgia, and I'd received a packet from the US Department of Energy describing the competition. It was set to have its…
My Choice in the ‘Building Enclosure’ vs. ‘Building Envelope’ Battle
When I wrote about the debate over the terms 'building envelope' vs. 'building enclosure' a couple of weeks ago, I favored the former but overall felt agnostic on whether we should choose one over the other. I didn't think I'd…