Juncos Municipio, PR Insulation Payback
Juncos Municipio attic insulation, by the numbers
DOE classifies Juncos Municipio as climate zone 1, hot-humid — long, muggy summers and mild winters, where cooling dominates the energy bill. 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 2.4 years at an estimated $701/year saved. Topping up the attic pays for itself fast here.
Where the savings come from
Split it out and it's roughly $0 a year on the heating side, $700 on cooling. By estimated insulation savings, Juncos Municipio lands in the 2th percentile nationally. Zone 1 alone covers 81 counties in this dataset, and Juncos Municipio comes in 46th by savings. Puerto Rico averages $660/year across the counties tracked here; Juncos Municipio comes in 6% higher.
Where these numbers come from
Juncos Municipio's climate figures — 1 heating and 4,516 cooling degree days a year — are read from JUNCOS 1 SE, PR RQ, 0.2 miles away, NOAA's nearest 1991-2020 normals station. By total degree days, Juncos Municipio sits at the 12th percentile nationally. One local detail the R-value alone won't tell you: Juncos Municipio sits in moisture regime A (humid), which can affect the vapor-barrier choice.
If the attic isn't bare
Already have a few inches up there? Topping R-11 up to R-25 runs about $840 for about $76/year saved — roughly 11 years to break even. Call this borderline rather than a clear win.
Getting it done in Juncos Municipio
Real bids depend on how easy the attic is to reach and whether old insulation needs removing first, so treat $1,680 as a starting estimate for a Juncos Municipio job, not a quote. Expect at least a $600 minimum charge from most contractors.
Where these figures come from
Juncos Municipio's R-30 target and its degree-day figures both come from named federal sources - see the methodology guide for exactly which ones. The guide to what R-value actually means explains why R-30 is the target here specifically.