Barry County, MI Insulation Payback
Attic insulation payback for Barry County, MI
DOE classifies Barry County as climate zone 5, cold — cold enough that heating, not cooling, is what decides the bill. Its recommended attic R-value for bare joists is R-60. For an attic around 1,000 square feet, closing the gap from R-2 to R-60 costs around $3,480 and saves an estimated $1,927 a year — payback in roughly 1.8 years. Hard to find a home improvement with a faster payback than this.
Where the savings come from
Of that, about $1,840/year comes from reduced heating and $86/year from reduced cooling load through the ceiling. Barry County beats 79% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 745 counties DOE places in zone 5, Barry County ranks 116th. Against Michigan's own average of $2,064/year, Barry County runs 7% below that.
Where these numbers come from
NOAA's HASTINGS, MI US station, 4.3 miles from Barry County, supplies the 6,883 HDD and 537 CDD this estimate runs on. By total degree days, Barry County sits at the 78th percentile nationally. DOE also classifies Barry County as moisture regime A (humid) - ask a local contractor whether that changes the vapor-barrier approach for this job.
The smaller top-up scenario
A shallower starting point changes the math: with R-11 already down, only the gap to R-49 needs filling, at roughly $2,280 for an estimated $281/year saved (~8.1-year payback). It is close - the payback only just fits a reasonable timeframe.
Next steps for a Barry County attic
Get more than one quote before committing. Attic access and any needed air sealing move the price around, and most contractors won't take a job below roughly $600 regardless of size - worth asking upfront given Barry County's estimated $1,927/year on the line.
More on how this was built
Nothing here is a guess: the methodology guide names the DOE climate map and NOAA station data behind every number on this page. See the DIY vs. contractor guide for whether a job this size is realistic to do yourself.