Clinton County, KY Insulation Payback
Clinton County attic insulation, by the numbers
DOE classifies Clinton County as climate zone 4, mixed-humid — real heating and real cooling seasons both, roughly balanced across the year. Its recommended attic R-value for bare joists is R-60. Going from R-2 to the recommended R-60 costs roughly $3,480 installed for a typical attic (about 1,000 sq ft), and pays for itself in about 2.7 years at an estimated $1,288/year saved. Topping up the attic pays for itself fast here.
Where the savings come from
Split it out and it's roughly $1,103 a year on the heating side, $185 on cooling. By estimated insulation savings, Clinton County lands in the 38th percentile nationally. Zone 4 alone covers 825 counties in this dataset, and Clinton County comes in 606th by savings. Kentucky averages $1,385/year across the counties tracked here; Clinton County comes in 7% lower.
The climate data behind this
NOAA's BYRDSTOWN, TN US station, 10.2 miles from Clinton County, supplies the 4,125 HDD and 1,150 CDD this estimate runs on. That combined heating-and-cooling load ranks Clinton County 2107th nationally by total degree days — the 33th percentile. One local detail the R-value alone won't tell you: Clinton County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
Already have some insulation?
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $188/year saved — roughly 12.1 years to break even. Call this borderline rather than a clear win.
Getting it done in Clinton 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 Clinton County's estimated $1,288/year on the line.
Where these figures come from
Clinton County's R-60 target and its degree-day figures both come from named federal sources - see the methodology guide for exactly which ones. The guide to what R-value actually means explains why R-60 is the target here specifically.