Lincoln County, WI Insulation Payback
Lincoln County, WI: what topping up your attic actually costs
DOE classifies Lincoln County as climate zone 7, very cold — winters long and harsh enough that heating is essentially the entire equation. Its recommended attic R-value for bare joists is R-60. Topping up a typical 1,000-square-foot attic from bare joists (R-2) to R-60 runs an estimated $3,480, and saves about $2,377 a year in heating and cooling — a payback around 1.5 years. That's about as fast as attic paybacks get.
The breakdown behind the number
The estimated savings split roughly $2,317/year heating, $60/year cooling. Out of every 100 US counties tracked here, Lincoln County's savings potential beats roughly 95 of them. Within zone 7 specifically, it ranks 102nd of 120 counties by estimated savings. Wisconsin averages $2,200/year across the counties tracked here; Lincoln County comes in 8% higher.
Where these numbers come from
The heating and cooling degree days behind this estimate — 8,667 HDD and 373 CDD (base 65°F, 1991-2020 normals) — come from MERRILL, WI US, the nearest NOAA station with published normals, 11.2 miles from Lincoln County's center. Combined heating and cooling load puts Lincoln County in the 95th percentile of this 3,162-county dataset.
Already have some insulation?
A shallower starting point changes the math: with R-11 already down, only the gap to R-49 needs filling, at roughly $2,280 for an estimated $347/year saved (~6.6-year payback). That is a solid payback as home upgrades go.
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 $3,480 figure above as a planning number for Lincoln 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-60 is the target here specifically.