Baylor County, TX Insulation Payback
Baylor County, TX: what topping up your attic actually costs
Baylor County, Texas is zone 3 under DOE's climate map (Hot-Dry), which means scorching, dry summers where heat radiating straight through the roof does most of the damage. An uninsulated attic there should be built 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 2.4 years at an estimated $1,186/year saved. That's about as fast as attic paybacks get.
Where the savings come from
The estimated savings split roughly $807/year heating, $380/year cooling. Out of every 100 US counties tracked here, Baylor County's savings potential beats roughly 30 of them. Within zone 3 specifically, it ranks 115th of 690 counties by estimated savings. Texas averages $1,035/year across the counties tracked here; Baylor County comes in 15% higher.
The climate data behind this
The heating and cooling degree days behind this estimate — 3,040 HDD and 2,384 CDD (base 65°F, 1991-2020 normals) — come from SEYMOUR 3NW, TX US, the nearest NOAA station with published normals, 4.9 miles from Baylor County's center. That combined heating-and-cooling load ranks Baylor County 1966th nationally by total degree days — the 38th percentile. Baylor County falls in DOE's moisture regime B (dry), a detail that affects vapor-barrier recommendations more than the R-value target itself.
The smaller top-up scenario
Already have a few inches up there? Topping R-11 up to R-38 runs about $1,620 for about $160/year saved — roughly 10.1 years to break even. This one is a genuine toss-up, not a clear yes.
Next steps for a Baylor County attic
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 Baylor County's estimated $1,186/year on the line.
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.