Barranquitas Municipio, PR Insulation Payback
Attic insulation payback for Barranquitas Municipio, PR
DOE classifies Barranquitas Municipio as climate zone 1, 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-30. Going from R-2 to the recommended R-30 costs roughly $1,680 installed for a typical attic (about 1,000 sq ft), and pays for itself in about 4.3 years at an estimated $395/year saved. Worth doing on the numbers alone.
The breakdown behind the number
Of that, about $7/year comes from reduced heating and $388/year from reduced cooling load through the ceiling. Barranquitas Municipio beats 1% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 81 counties DOE places in zone 1, Barranquitas Municipio ranks 65th. Against Puerto Rico's own average of $660/year, Barranquitas Municipio runs 40% below that.
Barranquitas Municipio's actual weather, not a national average
Barranquitas Municipio's climate figures — 27 heating and 2,502 cooling degree days a year — are read from AIBONITO 1 S, PR RQ, 5.8 miles away, NOAA's nearest 1991-2020 normals station. By total degree days, Barranquitas Municipio sits at the 1th percentile nationally. DOE also classifies Barranquitas Municipio as moisture regime A (humid) - ask a local contractor whether that changes the vapor-barrier approach for this job.
If the attic isn't bare
A shallower starting point changes the math: with R-11 already down, only the gap to R-25 needs filling, at roughly $840 for an estimated $43/year saved (~19.5-year payback). It is close - the payback only just fits a reasonable timeframe.
Next steps for a Barranquitas Municipio attic
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $1,680 figure above as a planning number for Barranquitas Municipio, 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.