Cost of air sealing and insulation
I just read the results of this research project by the EPA. In it they air seal a home built in the late 1970’s and bring it from~ 0.93 ACHnat to 0.50 ACHnat. And they also add insulation to the attic (from R15 to R38), rim joists (from R0 to R11), and floors over the crawl space (from R0 to R11).
1) Is that type of air sealing accomplishment realistic in the real world without a deep energy retrofit?
2) What kind of cost would someone be looking at to do the air sealing, the insulation, and both combined. (I realize the variability in asking for a cost due to so many different scenarios. I’m looking for a ballpark range for a blog article I’m writing.)
GBA Detail Library
A collection of one thousand construction details organized by climate and house part