Lincoln County, OK Insulation Payback
Lincoln County attic insulation, by the numbers
Lincoln 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. Topping up a typical 1,000-square-foot attic from bare joists (R-2) to R-49 runs an estimated $2,820, and saves about $1,251 a year in heating and cooling — a payback around 2.3 years. Topping up the attic pays for itself fast here.
The breakdown behind the number
Split it out and it's roughly $932 a year on the heating side, $319 on cooling. By estimated insulation savings, Lincoln County lands in the 35th percentile nationally. Zone 3 alone covers 690 counties in this dataset, and Lincoln County comes in 47th by savings. Oklahoma averages $1,260/year across the counties tracked here; Lincoln County comes in 1% lower.
The climate data behind this
NOAA's CHANDLER, OK US station, 0.2 miles from Lincoln County, supplies the 3,514 HDD and 2,001 CDD this estimate runs on. Combined heating and cooling load puts Lincoln County in the 40th percentile of this 3,162-county dataset. One local detail the R-value alone won't tell you: Lincoln County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
The smaller top-up scenario
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 $169/year saved (~9.6-year payback). Call this borderline rather than a clear win.
Quotes and materials for this job
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 Lincoln County, not a bid - contractors typically charge a $600 minimum regardless of job size.
Where these figures come from
Lincoln 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.