Burke County, GA Insulation Payback
Burke County attic insulation, by the numbers
DOE classifies Burke County as climate zone 3, mixed-humid — heating load in winter and cooling load in summer, both worth taking seriously here. Its recommended attic R-value for bare joists is 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 $978 a year — payback in roughly 2.9 years. Topping up the attic pays for itself fast here.
Heating vs. cooling in Burke County
Split it out and it's roughly $649 a year on the heating side, $329 on cooling. By estimated insulation savings, Burke County lands in the 15th percentile nationally. Zone 3 alone covers 690 counties in this dataset, and Burke County comes in 514th by savings. Georgia averages $974/year across the counties tracked here; Burke County comes in 0% higher.
Where these numbers come from
NOAA's WAYNESBORO 2 S, GA US station, 0.9 miles from Burke County, supplies the 2,447 HDD and 2,066 CDD this estimate runs on. That combined heating-and-cooling load ranks Burke County 2799th nationally by total degree days — the 11th percentile. One local detail the R-value alone won't tell you: Burke County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
If the attic isn't bare
If Burke 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 $132/year — payback about 12.3 years. Call this borderline rather than a clear win.
Next steps for a Burke 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 Burke County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Where these figures come from
Burke County's R-49 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-49 is the target here specifically.