DeKalb County, MO Insulation Payback
DeKalb County, MO: what topping up your attic actually costs
DeKalb County, Missouri 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. Going from R-2 to the recommended R-60 costs roughly $3,480 installed for a typical attic (about 1,000 sq ft), and pays for itself in about 2 years at an estimated $1,746/year saved. That's about as fast as attic paybacks get.
Heating vs. cooling in DeKalb County
The estimated savings split roughly $1,576/year heating, $170/year cooling. Out of every 100 US counties tracked here, DeKalb County's savings potential beats roughly 69 of them. Within zone 5 specifically, it ranks 396th of 745 counties by estimated savings. Missouri averages $1,534/year across the counties tracked here; DeKalb County comes in 14% higher.
Where these numbers come from
DeKalb County's climate figures — 5,895 heating and 1,058 cooling degree days a year — are read from AMITY 4 NE, MO US, 2.5 miles away, NOAA's nearest 1991-2020 normals station. That combined heating-and-cooling load ranks DeKalb County 937th nationally by total degree days — the 70th percentile. DeKalb County falls in DOE's moisture regime A (humid), a detail that affects vapor-barrier recommendations more than the R-value target itself.
The smaller top-up scenario
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 $255/year saved (~9-year payback). This one is a genuine toss-up, not a clear yes.
Getting it done in DeKalb County
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 DeKalb 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-60 is the target here specifically.