Mayes County, OK Insulation Payback
Mayes County, OK: what topping up your attic actually costs
DOE classifies Mayes County as climate zone 3, mixed-humid — real heating and real cooling seasons both, roughly balanced across the year. Its recommended attic R-value for bare joists is R-49. Topping up a typical 1,000-square-foot attic from bare joists (R-2) to R-49 runs an estimated $2,820, and saves about $1,303 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 Mayes County
The estimated savings split roughly $1,028/year heating, $275/year cooling. Out of every 100 US counties tracked here, Mayes County's savings potential beats roughly 39 of them. Within zone 3 specifically, it ranks 28th of 690 counties by estimated savings. Oklahoma averages $1,260/year across the counties tracked here; Mayes County comes in 3% higher.
Where these numbers come from
NOAA's PRYOR, OK US station, 5.3 miles from Mayes County, supplies the 3,874 HDD and 1,728 CDD this estimate runs on. By total degree days, Mayes County sits at the 42th percentile nationally. Mayes 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-38 runs about $1,620 for about $176/year saved — roughly 9.2 years to break even. This one is a genuine toss-up, not a clear yes.
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 $2,820 as a starting estimate for a Mayes 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-49 is the target here specifically.