Franklin County, ME Insulation Payback
Franklin County, ME: what topping up your attic actually costs
Franklin County sits in IECC climate zone 6 (Cold) — a real winter that drives most of the annual energy bill here. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-60. For an attic around 1,000 square feet, closing the gap from R-2 to R-60 costs around $3,480 and saves an estimated $2,553 a year — payback in roughly 1.4 years. That's about as fast as attic paybacks get.
Heating vs. cooling in Franklin County
The estimated savings split roughly $2,531/year heating, $22/year cooling. Out of every 100 US counties tracked here, Franklin County's savings potential beats roughly 98 of them. Within zone 6 specifically, it ranks 4th of 459 counties by estimated savings. Maine averages $2,159/year across the counties tracked here; Franklin County comes in 18% higher.
Where these numbers come from
The heating and cooling degree days behind this estimate — 9,466 HDD and 136 CDD (base 65°F, 1991-2020 normals) — come from RANGELEY, ME US, the nearest NOAA station with published normals, 11.1 miles from Franklin County's center. By total degree days, Franklin County sits at the 98th percentile nationally. Franklin County falls in DOE's moisture regime A (humid), a detail that affects vapor-barrier recommendations more than the R-value target itself.
If the attic isn't bare
If Franklin County's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-49. That smaller top-up costs around $2,280 and saves an estimated $372/year — payback about 6.1 years. That is a solid payback as home upgrades go.
Getting it done in Franklin 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 Franklin County's estimated $2,553/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-60 is the target here specifically.