Tazewell County, VA Insulation Payback
Tazewell County attic insulation, by the numbers
Tazewell County sits in IECC climate zone 4 (Mixed-Humid) — real heating and real cooling seasons both, roughly balanced across the year. For a currently uninsulated attic, DOE and Energy Star recommend building up to 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 2.1 years at an estimated $1,644/year saved.
Topping up the attic pays for itself fast here.
The breakdown behind the number
Split it out and it's roughly $1,595 a year on the heating side, $48 on cooling. By estimated insulation savings, Tazewell County lands in the 62nd percentile nationally. Zone 4 alone covers 825 counties in this dataset, and Tazewell County comes in 17th by savings. Virginia averages $1,342/year across the counties tracked here; Tazewell County comes in 23% higher.
Where these numbers come from
The heating and cooling degree days behind this estimate — 5,967 HDD and 301 CDD (base 65°F, 1991-2020 normals) — come from Burkes Garden, VA US, the nearest NOAA station with published normals, 12.7 miles from Tazewell County's center. That combined heating-and-cooling load ranks Tazewell County 1358th nationally by total degree days — the 57th percentile. One local detail the R-value alone won't tell you: Tazewell County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
The smaller top-up scenario
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $240/year saved — roughly 9.5 years to break even. Call this borderline rather than a clear win.
Getting it done in Tazewell County
Get quotes from at least two local contractors before committing. Attic access and any needed air sealing move the price around, and most contractors won't take a job below roughly $600 regardless of size - worth checking upfront given Tazewell County's estimated $1,644/year on the line.
Where these figures come from
Tazewell 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.