Greensville County, VA Insulation Payback
Greensville County attic insulation, by the numbers
Greensville 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. 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 $1,203 a year — payback in roughly 2.9 years. Topping up the attic pays for itself fast here.
Heating vs. cooling in Greensville County
Split it out and it's roughly $940 a year on the heating side, $262 on cooling. By estimated insulation savings, Greensville County lands in the 31th percentile nationally. Zone 4 alone covers 825 counties in this dataset, and Greensville County comes in 743rd by savings. Virginia averages $1,342/year across the counties tracked here; Greensville County comes in 10% lower.
Where these numbers come from
Greensville County's climate figures — 3,517 heating and 1,632 cooling degree days a year — are read from EMPORIA 1 WNW, VA US, 1.2 miles away, NOAA's nearest 1991-2020 normals station. By total degree days, Greensville County sits at the 30th percentile nationally. One local detail the R-value alone won't tell you: Greensville County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
If the attic isn't bare
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 $175/year saved (~13-year payback). Call this borderline rather than a clear win.
Getting it done in Greensville 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 Greensville County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Where these figures come from
Greensville 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.