Perquimans County, NC Insulation Payback
Is attic insulation worth it in Perquimans County, NC?
DOE classifies Perquimans County as climate zone 3, mixed-humid — a genuine mix of cold winters and humid summers, with neither one dominating the bill. Its recommended attic R-value for bare joists is R-49. Topping up a typical 1,000-square-foot attic from bare joists (R-2) to R-49 runs an estimated $2,820, and saves about $1,090 a year in heating and cooling — a payback around 2.6 years. Few home upgrades pay back that quickly.
Heating vs. cooling in Perquimans County
Heating accounts for about $810/year of that and cooling about $280/year — Perquimans County needs both. Nationally, Perquimans County ranks in the 24th percentile for insulation savings potential. Compared only against its own climate zone, Perquimans County places 258th out of 690. Against North Carolina's own average of $1,169/year, Perquimans County runs 7% below that.
Perquimans County's actual weather, not a national average
Perquimans County's climate figures — 3,053 heating and 1,759 cooling degree days a year — are read from ELIZABETH CITY CGAS, NC US, 13.9 miles away, NOAA's nearest 1991-2020 normals station. Combined heating and cooling load puts Perquimans County in the 20th 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.
If the attic isn't bare
If Perquimans County's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-38. That smaller top-up costs around $1,620 and saves an estimated $147/year — payback about 11 years. Whether that is worth it depends on how long you plan to stay.
Next steps for a Perquimans County attic
Real bids depend on how easy the attic is to reach and whether old insulation needs removing first, so treat $2,820 as a starting estimate for a Perquimans County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Perquimans County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Perquimans 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.