Cleveland County, NC Insulation Payback
Cleveland County attic insulation, by the numbers
DOE classifies Cleveland County as climate zone 4, mixed-humid — heating load in winter and cooling load in summer, both worth taking seriously here. 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 $1,186 a year — payback in roughly 2.9 years. Topping up the attic pays for itself fast here.
Heating vs. cooling in Cleveland County
Split it out and it's roughly $952 a year on the heating side, $234 on cooling. By estimated insulation savings, Cleveland County lands in the 30th percentile nationally. Zone 4 alone covers 825 counties in this dataset, and Cleveland County comes in 765th by savings. North Carolina averages $1,169/year across the counties tracked here; Cleveland County comes in 1% higher.
The climate data behind this
Cleveland County's climate figures — 3,559 heating and 1,459 cooling degree days a year — are read from SHELBY 2 NW, NC US, 1.8 miles away, NOAA's nearest 1991-2020 normals station. Combined heating and cooling load puts Cleveland County in the 27th percentile of this 3,162-county dataset. One local detail the R-value alone won't tell you: Cleveland County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
If the attic isn't bare
A shallower starting point changes the math: with R-11 already down, only the gap to R-49 needs filling, at roughly $2,280 for an estimated $173/year saved (~13.2-year payback). Call this borderline rather than a clear win.
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 Cleveland County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Where these figures come from
Cleveland County's R-60 target and its degree-day figures both come from named federal sources - see the methodology guide for exactly which ones. The guide to what R-value actually means explains why R-60 is the target here specifically.