Lee County, TX Insulation Payback
Attic insulation payback for Lee County, TX
Lee County sits in IECC climate zone 2 (Hot-Humid) — long, muggy summers and mild winters, where cooling dominates the energy bill. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-49. Going from R-2 to the recommended R-49 costs roughly $2,820 installed for a typical attic (about 1,000 sq ft), and pays for itself in about 3 years at an estimated $936/year saved. Worth doing on the numbers alone.
Where the savings come from
Of that, about $471/year comes from reduced heating and $466/year from reduced cooling load through the ceiling. Lee County beats 12% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 233 counties DOE places in zone 2, Lee County ranks 22nd. Against Texas's own average of $1,035/year, Lee County runs 10% below that.
The climate data behind this
The heating and cooling degree days behind this estimate — 1,774 HDD and 2,922 CDD (base 65°F, 1991-2020 normals) — come from LEXINGTON, TX US, the nearest NOAA station with published normals, 6.3 miles from Lee County's center. Combined heating and cooling load puts Lee County in the 17th percentile of this 3,162-county dataset. DOE also classifies Lee 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
If Lee County's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-38. That smaller top-up costs around $1,620 and saves an estimated $126/year — payback about 12.8 years. It is close - the payback only just fits a reasonable timeframe.
Next steps for a Lee County attic
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 Lee County job, not a quote. Expect at least a $600 minimum charge from most contractors.
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.