Cameron Parish, LA Insulation Payback
Cameron Parish, LA: what topping up your attic actually costs
DOE classifies Cameron Parish 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. 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 $839 a year — payback in roughly 3.4 years. The math clears comfortably within a normal ownership horizon.
Where the savings come from
The estimated savings split roughly $356/year heating, $483/year cooling. Out of every 100 US counties tracked here, Cameron Parish's savings potential beats roughly 6 of them. Within zone 2 specifically, it ranks 130th of 233 counties by estimated savings. Louisiana averages $906/year across the counties tracked here; Cameron Parish comes in 7% lower.
Where these numbers come from
The heating and cooling degree days behind this estimate — 1,342 HDD and 3,028 CDD (base 65°F, 1991-2020 normals) — come from HACKBERRY 8 SSW, LA US, the nearest NOAA station with published normals, 14.2 miles from Cameron Parish's center. Combined heating and cooling load puts Cameron Parish in the 8th percentile of this 3,162-county dataset. Cameron Parish 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?
If Cameron Parish'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 $113/year — payback about 14.3 years. This one is a genuine toss-up, not a clear yes.
Getting it done in Cameron Parish
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 Cameron Parish 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.