Lincoln County, OR Insulation Payback
Attic insulation payback for Lincoln County, OR
DOE classifies Lincoln County as climate zone 4, marine — temperate and damp most of the year, with neither heating nor cooling asking for much. Its recommended attic R-value for bare joists is 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 $1,352 a year — payback in roughly 2.6 years. Hard to find a home improvement with a faster payback than this.
Where the savings come from
Nearly all of that is heating savings ($1,352/year) — Lincoln County's cooling load through the ceiling is negligible. Lincoln County beats 42% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 825 counties DOE places in zone 4, Lincoln County ranks 480th. Against Oregon's own average of $1,557/year, Lincoln County runs 13% below that.
The climate data behind this
Lincoln County's climate figures — 5,056 heating and 2 cooling degree days a year — are read from NEWPORT 1 SE, OR US, 6.8 miles away, NOAA's nearest 1991-2020 normals station. That combined heating-and-cooling load ranks Lincoln County 2292nd nationally by total degree days — the 28th percentile. DOE also classifies Lincoln County as moisture regime C (marine) - ask a local contractor whether that changes the vapor-barrier approach for this job.
The smaller top-up scenario
If Lincoln 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 $197/year — payback about 11.6 years. It is close - the payback only just fits a reasonable timeframe.
Getting it done in Lincoln County
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $3,480 figure above as a planning number for Lincoln County, not a bid - contractors typically charge a $600 minimum regardless of job size.
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.