Parke County, IN Insulation Payback
Is attic insulation worth it in Parke County, IN?
DOE classifies Parke 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. 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 2.1 years at an estimated $1,654/year saved. Few home upgrades pay back that quickly.
The breakdown behind the number
Heating accounts for about $1,507/year of that and cooling about $147/year — Parke County needs both. Nationally, Parke County ranks in the 63th percentile for insulation savings potential. Compared only against its own climate zone, Parke County places 564th out of 745. Against Indiana's own average of $1,634/year, Parke County runs 1% above that.
Parke County's actual weather, not a national average
Parke County's climate figures — 5,635 heating and 917 cooling degree days a year — are read from ROCKVILLE, IN US, 1.9 miles away, NOAA's nearest 1991-2020 normals station. Combined heating and cooling load puts Parke County in the 63th percentile of this 3,162-county dataset. 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.
Already have some insulation?
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 $241/year saved (~9.5-year payback). Whether that is worth it depends on how long you plan to stay.
Getting it done in Parke County
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 Parke County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Parke County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Parke 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.