Moore County, TN Insulation Payback
Attic insulation payback for Moore County, TN
DOE classifies Moore County as climate zone 4, mixed-humid — a genuine mix of cold winters and humid summers, with neither one dominating 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 $1,263 a year — payback in roughly 2.8 years.
Hard to find a home improvement with a faster payback than this.
Where the savings come from
Of that, about $1,040/year comes from reduced heating and $224/year from reduced cooling load through the ceiling. Moore County beats 36% of the counties in this 3,171-county dataset on estimated insulation savings. Among the 825 counties DOE places in zone 4, Moore County ranks 656th. Against Tennessee's own average of $1,258/year, Moore County runs 0% above that.
Moore County's actual weather, not a national average
NOAA's Lynchburg, TN US station, 0.7 miles from Moore County, supplies the 3,889 HDD and 1,392 CDD this estimate runs on. That combined heating-and-cooling load ranks Moore County 2112th nationally by total degree days — the 33rd percentile. DOE also classifies Moore 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
If Moore County's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-49. That smaller top-up costs around $2,280 and saves an estimated $184/year — payback about 12.4 years. It is close - the payback only just fits a reasonable timeframe.
Quotes and materials for this job
Real bids depend on how easy the attic is to reach and whether old insulation needs removing first, so treat $3,480 as a starting estimate for a Moore County job, not a quote. You should get more than one quote before signing anything - expect at least a $600 minimum charge from most contractors.
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.