The Atlanta housing market is booming again. I see renovations, infill, and tear-downs all over the place lately. There's a rebuild after tear-down happening now along one of my main walks. You saw a little about it already. Remember that…
What happens to the heating and cooling loads when you encapsulate an attic? With the insulation and air barrier at the ceiling below the attic, you're excluding the attic space. That volume of air up there isn't involved in the…
After taking classes for the past 15 years, my sister graduated from college last week. While I was in Lakeland, Florida for her graduation, I took the photo above. It's a hotel under construction. I took this picture because I…
We've had some beautiful, cool weather here in Atlanta the past couple of days. It's about 50° F outdoors as I write this. The high yesterday was only about 70° F. We're getting a few more heating degree days (HDD)…
I found this little quiz on Twitter the other day. I got 9 correct out of 12, but I'd like to dispute one of my wrong answers. One of the answers surprised me. And I was glad to see one…
Most new homes in North America are built with sticks. The early home builders used bigger pieces of wood — timbers — and when the smaller dimensional lumber that we use so much today hit the market, they scoffingly referred to those…
The I-joists in the photo above run across the top of the wall between the dining room and the garage. In the old days, before anyone worried at all about air moving through those joist cavities, the builder didn't do…
Seven years ago Georgia led the nation. Yep. We were the first state to adopt an energy code that made blower door testing mandatory. All new homes built in the state had to show through performance testing that they had…
You're having your dream house built. You're into the design phase, working with an architect or looking through collections of house plans. You're doing your homework, trying to find out how to ensure you get a top quality house. And…
You can tell how energy efficient a furnace is by its official efficiency rating, the Annual Fuel Utilization Efficiency (AFUE). It's a measure of how much of the heat originally in the fuel that's being burned is available for delivery…