Reading the Roof After a Snowstorm
Do you know how to read a roof after a snowstorm? When you do, it tells you how good the building enclosure is. We had that opportunity here last weekend. We got 2 or 3 inches of snow in Atlanta…
attic
Building Science News & Trends for 2025
Several years ago, I heard something really interesting at a talk by a self-described futurist. It's an interesting "Futurists," she said, "look at weak signals and try to figure out which ones will become strong signals." I hadn't thought…
A Weekend Zehnder ERV Installation Blitz
You may recall that in 2021 Zehnder America gave me one of their premium energy recovery ventilators (ERV) with all the components I needed to get it up and running in my house. It's taken longer than I wanted to…
Don’t Vent Bath Fans to the Attic!
Bathrooms need some way of exhausting air. Mostly it's to keep the humidity down, but, depending on who lives in the house, the bathroom also can be a source of a lot of volatile organic compounds (VOCs). Not all homes…
Weatherizing an Old House: An MLK Day Service Project
A lot of volunteers gathered in Decatur, Georgia this past weekend for the annual Martin Luther King Jr. Service Project. They worked at a number of sites doing all kinds things to improve the homes of low-income senior citizens. The…
10 Ways Your House Is Haunted
Imagine the house of your dreams. It's beautiful and laid out efficiently. You're always comfortable. It promotes health and happiness. The operating costs are low. You don't have to spend much to maintain it. You don't get a lot of…
![Pulling Air From The Crawl Space To Cool The House Is A Really Stupid Thing To Do With Air [Photo Courtesy Of E3 Innovate In Nashville, TN]](https://www.energyvanguard.com/wp-content/uploads/2023/10/cool-air-intake-crawl-space-e3-innovate.jpg)
7 Stupid Things You Can Do With Air
The Talking Heads said it best: "Air can hurt you, too." And it does it in so many ways. It can hurt your pocketbook. It can make you uncomfortable. It can make you sweat. It can make you sick. And,…
Uncovering the Secrets of an Old House
I've been in a lot of old houses and seen a lot of interesting things. One of the things I love about that is trying to figure out the mysteries I find. Lately, the mysteries I've been encountering are in…
Is Venting an Unconditioned Attic Necessary?
Let’s talk about the controversial issue of venting an unconditioned attic with outdoor air. It's easy to confuse causes and symptoms sometimes, and that happens a lot with attic ventilation. I'll say upfront, though, that the International Residential Code requires…
Can Cold Surfaces Wring Moisture From Dry Air?
Cold air is dry air, right? Think about the humidity in your house in winter compared to what it is in summer. If you're in a humid climate, it's going to be drier in winter. Even in dry climates, it's…