Kimble County, TX Insulation Payback
Attic insulation payback for Kimble County, TX
Kimble County sits in IECC climate zone 3 (Hot-Dry) — intense summer heat with low humidity, where attic radiant heat gain is the main driver. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-49. For an attic around 1,000 square feet, closing the gap from R-2 to R-49 costs around $2,820 and saves an estimated $964 a year — payback in roughly 2.9 years. Hard to find a home improvement with a faster payback than this.
The breakdown behind the number
Of that, about $547/year comes from reduced heating and $418/year from reduced cooling load through the ceiling. Kimble County beats 14% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 690 counties DOE places in zone 3, Kimble County ranks 547th. Against Texas's own average of $1,035/year, Kimble County runs 7% below that.
Where these numbers come from
The heating and cooling degree days behind this estimate — 2,061 HDD and 2,620 CDD (base 65°F, 1991-2020 normals) — come from JUNCTION KIMBLE CO AP, TX US, the nearest NOAA station with published normals, 2.5 miles from Kimble County's center. Combined heating and cooling load puts Kimble County in the 16th percentile of this 3,162-county dataset. DOE also classifies Kimble County as moisture regime B (dry) - ask a local contractor whether that changes the vapor-barrier approach for this job.
If the attic isn't bare
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 $130/year saved (~12.5-year payback). It is close - the payback only just fits a reasonable timeframe.
Getting it done in Kimble County
Get more than one quote before committing. Attic access and any needed air sealing move the price around, and most contractors won't take a job below roughly $600 regardless of size - worth asking upfront given Kimble County's estimated $964/year on the line.
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.