Yesterday I was doing a home energy rating for quality assurance in Augusta, Georgia, and the house I was in had a bonus room. Bonus rooms are often the least comfortable room in a house, and the main reason is…
Some people argue against thermostat setbacks, saying they don't save energy anymore. The reasons behind that thinking, however, are flawed. Setting back your thermostat when you're away or at night definitely can save energy (depending on a few factors, as…
Ten years ago, I spent a fair amount of time up on the roof of the SIP house I was building. Now, Martin Holladay, the famous Energy Nerd of Green Building Advisor, has an article titled Martin’s Ten Rules of…
We've made a few videos here at Energy Vanguard and will be adding a lot more to our TheEnergyVanguard YouTube channel. Videos are great for learning about building science and home energy audits, so here are some of my favorite…
Remember that science class where you learned about the three forms of heat flow: conduction, convection, and radiation? Well, class, let's make it real today. You insulate your walls, floors, and ceilings to limit the amount of heat your home…
Ten years ago, I was at the front end of building a green, high performance home. (That's me on the ladder connecting the two LVL ridge beams that support the structural insulated panel roof.) It was going to take only…
I'm teaching a HERS rater class this week, and on Monday we went out to look at a couple of houses and do a Blower Door test. The second house we visited was under construction, and the builder had used…
Snow on the Roof is the poor man's infrared camera. During the snow days we just had in Atlanta, Jeffrey Sauls sent me the photo above. What you see is the roof of his own house, which he'd had insulated…
I guess you could call me a contrarian. I usually go in the opposite direction from the crowds. In 1997, for example, I spent two weeks in Portugal, where most people head for the beaches south of Lisbon. Instead, I…
One of the most common questions I get when I describe homes with insulated rooflines is, "What does that do to the shingles?" Some roofing companies have made a lot of noise about this topic, saying that if the shingles…