Vilas County, WI Insulation Payback
Vilas County, WI: what topping up your attic actually costs
Vilas County, Wisconsin is zone 7 under DOE's climate map (Very Cold), which means a climate where the heating season stretches across most of the year. An uninsulated attic there should be built up to R-60. For an attic around 1,000 square feet, closing the gap from R-2 to R-60 costs around $3,480 and saves an estimated $2,571 a year — payback in roughly 1.4 years. That's about as fast as attic paybacks get.
The breakdown behind the number
The estimated savings split roughly $2,535/year heating, $35/year cooling. Out of every 100 US counties tracked here, Vilas County's savings potential beats roughly 98 of them. Within zone 7 specifically, it ranks 49th of 120 counties by estimated savings. Wisconsin averages $2,200/year across the counties tracked here; Vilas County comes in 17% higher.
Vilas County's actual weather, not a national average
NOAA's ST GERMAIN, WI US station, 9.3 miles from Vilas County, supplies the 9,481 HDD and 221 CDD this estimate runs on. That combined heating-and-cooling load ranks Vilas County 64th nationally by total degree days — the 98th percentile.
If the attic isn't bare
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $375/year saved — roughly 6.1 years to break even. That is a solid payback as home upgrades go.
Quotes and materials for this job
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 Vilas 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.