Niobrara County, WY Insulation Payback
Attic insulation payback for Niobrara County, WY
DOE classifies Niobrara County as climate zone 6, cold — cold enough that heating, not cooling, is what decides the bill. Its recommended attic R-value for bare joists is 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 $2,060 a year — payback in roughly 1.7 years. Hard to find a home improvement with a faster payback than this.
Heating vs. cooling in Niobrara County
Of that, about $1,960/year comes from reduced heating and $100/year from reduced cooling load through the ceiling. Niobrara County beats 85% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 459 counties DOE places in zone 6, Niobrara County ranks 337th. Against Wyoming's own average of $2,161/year, Niobrara County runs 5% below that.
Niobrara County's actual weather, not a national average
The heating and cooling degree days behind this estimate — 7,331 HDD and 624 CDD (base 65°F, 1991-2020 normals) — come from LANCE CREEK 11NNE, WY US, the nearest NOAA station with published normals, 10.8 miles from Niobrara County's center. That combined heating-and-cooling load ranks Niobrara County 473rd nationally by total degree days — the 85th percentile. DOE also classifies Niobrara County as moisture regime B (dry) - ask a local contractor whether that changes the vapor-barrier approach for this job.
The smaller top-up scenario
If Niobrara 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 $301/year — payback about 7.6 years. Topping up the attic pays for itself here.
Next steps for a Niobrara County attic
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 Niobrara County, not a bid - contractors typically charge a $600 minimum regardless of job size.
More on how this was built
Nothing here is a guess: the methodology guide names the DOE climate map and NOAA station data behind every number on this page. See the DIY vs. contractor guide for whether a job this size is realistic to do yourself.