Campbell County, VA Insulation Payback
Campbell County, VA: what topping up your attic actually costs
DOE classifies Campbell County as climate zone 4, 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-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 2.6 years at an estimated $1,327/year saved. That's about as fast as attic paybacks get.
Where the savings come from
The estimated savings split roughly $1,148/year heating, $179/year cooling. Out of every 100 US counties tracked here, Campbell County's savings potential beats roughly 41 of them. Within zone 4 specifically, it ranks 529th of 825 counties by estimated savings. Virginia averages $1,342/year across the counties tracked here; Campbell County comes in 1% lower.
The climate data behind this
NOAA's LYNCHBURG RGNL AP, VA US station, 9.8 miles from Campbell County, supplies the 4,295 HDD and 1,115 CDD this estimate runs on. That combined heating-and-cooling load ranks Campbell County 1980th nationally by total degree days — the 37th percentile. Campbell 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
If Campbell County's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-49. That smaller top-up costs around $2,280 and saves an estimated $194/year — payback about 11.8 years. This one is a genuine toss-up, not a clear yes.
Next steps for a Campbell County attic
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 Campbell 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-60 is the target here specifically.