Wayne County, UT Insulation Payback
Wayne County, UT: what topping up your attic actually costs
Wayne County, Utah is zone 5 under DOE's climate map (Cold), which means a real winter that drives most of the annual energy bill here. An uninsulated attic there should be built up to 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 $1,587 a year in heating and cooling — a payback around 2.2 years. That's about as fast as attic paybacks get.
Heating vs. cooling in Wayne County
The estimated savings split roughly $1,403/year heating, $184/year cooling. Out of every 100 US counties tracked here, Wayne County's savings potential beats roughly 59 of them. Within zone 5 specifically, it ranks 653rd of 745 counties by estimated savings. Utah averages $1,791/year across the counties tracked here; Wayne County comes in 11% lower.
Where these numbers come from
NOAA's CAPITOL REEF NP, UT US station, 14.9 miles from Wayne County, supplies the 5,246 HDD and 1,147 CDD this estimate runs on. That combined heating-and-cooling load ranks Wayne County 1277th nationally by total degree days — the 60th percentile. Wayne County falls in DOE's moisture regime B (dry), a detail that affects vapor-barrier recommendations more than the R-value target itself.
Already have some insulation?
If Wayne County's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-49. That smaller top-up costs around $2,280 and saves an estimated $231/year — payback about 9.8 years. This one is a genuine toss-up, not a clear yes.
Getting it done in Wayne County
Get more than one quote 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 asking upfront given Wayne County's estimated $1,587/year on the line.
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.