Fayette County, OH Insulation Payback
Fayette County attic insulation, by the numbers
DOE classifies Fayette 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 $1,635 a year — payback in roughly 2.1 years. Topping up the attic pays for itself fast here.
Heating vs. cooling in Fayette County
Split it out and it's roughly $1,501 a year on the heating side, $133 on cooling. By estimated insulation savings, Fayette County lands in the 62th percentile nationally. Zone 5 alone covers 745 counties in this dataset, and Fayette County comes in 597th by savings. Ohio averages $1,669/year across the counties tracked here; Fayette County comes in 2% lower.
Where these numbers come from
Fayette County's climate figures — 5,615 heating and 830 cooling degree days a year — are read from WASHINGTON COURT HOUSE, OH US, 2.4 miles away, NOAA's nearest 1991-2020 normals station. By total degree days, Fayette County sits at the 61th percentile nationally. One local detail the R-value alone won't tell you: Fayette 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 $238/year saved — roughly 9.6 years to break even. Call this borderline rather than a clear win.
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 Fayette County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Where these figures come from
Fayette 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.