Freestone County, TX Insulation Payback
Freestone County, TX: what topping up your attic actually costs
DOE classifies Freestone County as climate zone 2, hot-humid — humid heat for much of the year, with cooling running far more than heating ever does. 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 $981 a year in heating and cooling — a payback around 2.9 years. That's about as fast as attic paybacks get.
The breakdown behind the number
The estimated savings split roughly $582/year heating, $399/year cooling. Out of every 100 US counties tracked here, Freestone County's savings potential beats roughly 15 of them. Within zone 2 specifically, it ranks 9th of 233 counties by estimated savings. Texas averages $1,035/year across the counties tracked here; Freestone County comes in 5% lower.
Where these numbers come from
The heating and cooling degree days behind this estimate — 2,194 HDD and 2,506 CDD (base 65°F, 1991-2020 normals) — come from FAIRFIELD 3W, TX US, the nearest NOAA station with published normals, 4.3 miles from Freestone County's center. Combined heating and cooling load puts Freestone County in the 17th percentile of this 3,162-county dataset. Freestone 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 $132/year saved — roughly 12.3 years to break even. This one is a genuine toss-up, not a clear yes.
Getting it done in Freestone County
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 Freestone 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.