Richland County, ND Insulation Payback
Richland County, ND: what topping up your attic actually costs
DOE classifies Richland 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 $2,381 a year — payback in roughly 1.5 years. That's about as fast as attic paybacks get.
Where the savings come from
The estimated savings split roughly $2,290/year heating, $91/year cooling. Out of every 100 US counties tracked here, Richland County's savings potential beats roughly 95 of them. Within zone 6 specifically, it ranks 41st of 459 counties by estimated savings. North Dakota averages $2,496/year across the counties tracked here; Richland County comes in 5% lower.
Richland County's actual weather, not a national average
The heating and cooling degree days behind this estimate — 8,565 HDD and 565 CDD (base 65°F, 1991-2020 normals) — come from LIDGERWOOD, ND US, the nearest NOAA station with published normals, 16.6 miles from Richland County's center. That combined heating-and-cooling load ranks Richland County 132nd nationally by total degree days — the 96th percentile. Richland County falls in DOE's moisture regime A (humid), a detail that affects vapor-barrier recommendations more than the R-value target itself.
Already have some insulation?
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $347/year saved — roughly 6.6 years to break even. That is a solid payback as home upgrades go.
Quotes and materials for this job
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 Richland County's estimated $2,381/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.