Scott County, IN Insulation Payback
Is attic insulation worth it in Scott County, IN?
Scott County, Indiana is zone 4 under DOE's climate map (Mixed-Humid), which means a genuine mix of cold winters and humid summers, with neither one dominating the bill. 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 $1,488 a year — payback in roughly 2.3 years. Few home upgrades pay back that quickly.
Where the savings come from
Heating accounts for about $1,296/year of that and cooling about $192/year — Scott County needs both. Nationally, Scott County ranks in the 52th percentile for insulation savings potential. Compared only against its own climate zone, Scott County places 193rd out of 825. Against Indiana's own average of $1,634/year, Scott County runs 9% below that.
Where these numbers come from
Scott County's climate figures — 4,847 heating and 1,195 cooling degree days a year — are read from SCOTTSBURG, IN US, 1.9 miles away, NOAA's nearest 1991-2020 normals station. By total degree days, Scott County sits at the 53th percentile nationally. Its moisture regime is classified humid, which matters for whether the attic needs a vapor retarder as part of the job — worth asking a contractor about locally.
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 $217/year saved — roughly 10.5 years to break even. Whether that is worth it depends on how long you plan to stay.
Next steps for a Scott 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 Scott County's estimated $1,488/year on the line.
Scott County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Scott County's numbers, and where the cost assumptions come from. See the DIY vs. contractor guide for whether a job this size is realistic to do yourself.