Camden County, NC Insulation Payback
Camden County, NC: what topping up your attic actually costs
Camden County sits in IECC climate zone 3 (Mixed-Humid) — heating load in winter and cooling load in summer, both worth taking seriously here. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-49. Going from R-2 to the recommended R-49 costs roughly $2,820 installed for a typical attic (about 1,000 sq ft), and pays for itself in about 2.7 years at an estimated $1,059/year saved. That's about as fast as attic paybacks get.
The breakdown behind the number
The estimated savings split roughly $757/year heating, $302/year cooling. Out of every 100 US counties tracked here, Camden County's savings potential beats roughly 21 of them. Within zone 3 specifically, it ranks 337th of 690 counties by estimated savings. North Carolina averages $1,169/year across the counties tracked here; Camden County comes in 9% lower.
The climate data behind this
The heating and cooling degree days behind this estimate — 2,852 HDD and 1,895 CDD (base 65°F, 1991-2020 normals) — come from ELIZABETH CITY, NC US, the nearest NOAA station with published normals, 3.3 miles from Camden County's center. That combined heating-and-cooling load ranks Camden County 2582nd nationally by total degree days — the 18th percentile. Camden 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
Already have a few inches up there? Topping R-11 up to R-38 runs about $1,620 for about $143/year saved — roughly 11.4 years to break even. This one is a genuine toss-up, not a clear yes.
Getting it done in Camden County
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $2,820 figure above as a planning number for Camden County, not a bid - contractors typically charge a $600 minimum regardless of job size.
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.