Charlton County, GA Insulation Payback
Charlton County, GA: what topping up your attic actually costs
Charlton County sits in IECC climate zone 2 (Hot-Humid) — summers that stay hot and humid while winters barely register on the energy bill. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-49. For an attic around 1,000 square feet, closing the gap from R-2 to R-49 costs around $2,820 and saves an estimated $780 a year — payback in roughly 3.6 years. The math clears comfortably within a normal ownership horizon.
Heating vs. cooling in Charlton County
The estimated savings split roughly $294/year heating, $486/year cooling. Out of every 100 US counties tracked here, Charlton County's savings potential beats roughly 4 of them. Within zone 2 specifically, it ranks 183rd of 233 counties by estimated savings. Georgia averages $974/year across the counties tracked here; Charlton County comes in 20% lower.
Where these numbers come from
Charlton County's climate figures — 1,109 heating and 3,048 cooling degree days a year — are read from FOLKSTON 9 SW, GA US, 2.8 miles away, NOAA's nearest 1991-2020 normals station. That combined heating-and-cooling load ranks Charlton County 3040th nationally by total degree days — the 4th percentile. Charlton County falls in DOE's moisture regime A (humid), a detail that affects vapor-barrier recommendations more than the R-value target itself.
If the attic isn't bare
A shallower starting point changes the math: with R-11 already down, only the gap to R-38 needs filling, at roughly $1,620 for an estimated $105/year saved (~15.4-year payback). This one is a genuine toss-up, not a clear yes.
Next steps for a Charlton 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 Charlton County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Nothing here is a guess
Every figure on this page traces to DOE/IECC climate zones and NOAA degree-day normals, documented in the methodology guide. The guide to what R-value actually means explains why R-49 is the target here specifically.