Campbell County, KY Insulation Payback
Attic insulation payback for Campbell County, KY
Campbell County, Kentucky 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. Topping up a typical 1,000-square-foot attic from bare joists (R-2) to R-60 runs an estimated $3,480, and saves about $1,465 a year in heating and cooling — a payback around 2.4 years. Hard to find a home improvement with a faster payback than this.
Heating vs. cooling in Campbell County
Of that, about $1,285/year comes from reduced heating and $181/year from reduced cooling load through the ceiling. Campbell County beats 50% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 825 counties DOE places in zone 4, Campbell County ranks 247th. Against Kentucky's own average of $1,385/year, Campbell County runs 6% above that.
Where these numbers come from
The heating and cooling degree days behind this estimate — 4,804 HDD and 1,125 CDD (base 65°F, 1991-2020 normals) — come from CINCINNATI LUNKEN AP, OH US, the nearest NOAA station with published normals, 11 miles from Campbell County's center. By total degree days, Campbell County sits at the 50th percentile nationally. DOE also classifies Campbell 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 $214/year saved (~10.7-year payback). It is close - the payback only just fits a reasonable timeframe.
Getting it done in Campbell County
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 Campbell County's estimated $1,465/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.