Stone County, AR Insulation Payback
Attic insulation payback for Stone County, AR
Stone County, Arkansas is zone 4 under DOE's climate map (Mixed-Humid), which means heating load in winter and cooling load in summer, both worth taking seriously here. An uninsulated attic there should be built up to 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 $1,249 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 $971/year comes from reduced heating and $277/year from reduced cooling load through the ceiling. Stone County beats 35% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 825 counties DOE places in zone 4, Stone County ranks 687th. Against Arkansas's own average of $1,185/year, Stone County runs 5% above that.
Where these numbers come from
The heating and cooling degree days behind this estimate — 3,632 HDD and 1,727 CDD (base 65°F, 1991-2020 normals) — come from MTN VIEW, AR US, the nearest NOAA station with published normals, 2.5 miles from Stone County's center. By total degree days, Stone County sits at the 36th percentile nationally. DOE also classifies Stone 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 $182/year saved (~12.5-year payback). It is close - the payback only just fits a reasonable timeframe.
Next steps for a Stone 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 Stone County's estimated $1,249/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.