Glades County, FL Insulation Payback
Attic insulation payback for Glades County, FL
Glades County, Florida is zone 2 under DOE's climate map (Hot-Humid), which means long, muggy summers and mild winters, where cooling dominates the energy bill. An uninsulated attic there should be built up to 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 $710 a year in heating and cooling — a payback around 4 years. Worth doing on the numbers alone.
Heating vs. cooling in Glades County
Of that, about $112/year comes from reduced heating and $598/year from reduced cooling load through the ceiling. Glades County beats 2% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 233 counties DOE places in zone 2, Glades County ranks 215th. Against Florida's own average of $743/year, Glades County runs 4% below that.
The climate data behind this
Glades County's climate figures — 422 heating and 3,751 cooling degree days a year — are read from BRIGHTON RSVN, FL US, 9.6 miles away, NOAA's nearest 1991-2020 normals station. By total degree days, Glades County sits at the 4th percentile nationally. DOE also classifies Glades County as moisture regime A (humid) - ask a local contractor whether that changes the vapor-barrier approach for this job.
The smaller top-up scenario
A shallower starting point changes the math: with R-11 already down, only the gap to R-38 needs filling, at roughly $1,620 for an estimated $96/year saved (~16.9-year payback). It is close - the payback only just fits a reasonable timeframe.
Next steps for a Glades County attic
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $2,820 figure above as a planning number for Glades 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.