Floyd County, IN Insulation Payback
Floyd County attic insulation, by the numbers
Floyd County sits in IECC climate zone 4 (Mixed-Humid) — a genuine mix of cold winters and humid summers, with neither one dominating the bill. For a currently uninsulated attic, DOE and ENERGY STAR recommend building 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 $1,371 a year in heating and cooling — a payback around 2.5 years. Topping up the attic pays for itself fast here.
Where the savings come from
Split it out and it's roughly $1,107 a year on the heating side, $264 on cooling. By estimated insulation savings, Floyd County lands in the 44th percentile nationally. Zone 4 alone covers 825 counties in this dataset, and Floyd County comes in 442nd by savings. Indiana averages $1,634/year across the counties tracked here; Floyd County comes in 16% lower.
Floyd County's actual weather, not a national average
The heating and cooling degree days behind this estimate — 4,141 HDD and 1,642 CDD (base 65°F, 1991-2020 normals) — come from LOUISVILLE MCALPINE, KY US, the nearest NOAA station with published normals, 7.1 miles from Floyd County's center. By total degree days, Floyd County sits at the 47th percentile nationally. One local detail the R-value alone won't tell you: Floyd County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
If the attic isn't bare
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $200/year saved — roughly 11.4 years to break even. Call this borderline rather than a clear win.
Getting it done in Floyd County
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $3,480 figure above as a planning number for Floyd County, not a bid - contractors typically charge a $600 minimum regardless of job size.
Where these figures come from
Floyd 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.