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2026 cost data

Insulation Cost in Honolulu, HI (2026)

Insulation contractors in Honolulu, HI price well above the national average. Here is what attic, wall, crawlspace and spray foam work should cost in the Honolulu metro in 2026.

Insulation prices per square foot

Installed prices — material plus labor — adjusted for Honolulu, HI labor rates.

Job typeInstalled cost / sq ft1,500 sq ft attic
Attic blown-in fiberglass (R-49)$2.78$4,163
Attic blown-in cellulose (R-49)$2.55$3,825
Attic fiberglass batts (R-38)$2.40$3,600
Wall batts, open framing (R-15)$2.63$3,938
Wall dense-pack retrofit (drill & fill)$3.90$5,850
Crawlspace floor or wall insulation$3.15$4,725
Basement rigid foam + framing$4.65$6,975
Open-cell spray foam (3.5")$2.92$4,388
Closed-cell spray foam (2")$5.40$8,100
Old insulation removal & disposal$2.33$3,488

What whole jobs cost

Typical projectLocal price range
Attic top-up (1,500 sq ft)$2,250 – $3,900
Full attic removal + re-insulate$4,800 – $8,100
Whole-house wall retrofit (2,000 sq ft home)$6,300 – $11,700
Crawlspace encapsulation + insulation$5,700 – $13,500
Garage conversion insulation$1,350 – $3,300
Whole-home spray foam (new build)$11,250 – $24,000

Climate zone 1 R-value targets

Department of Energy retrofit recommendations for this zone.

Attic
R-30
Walls
R-13
Floors
R-13
Check your current R-value →

Price your own job

These tables are averages. Punch in your real measurements for a number you can compare against a bid.

Insulation costAtticBlown-in bagsProject total

Statewide context

See how the Honolulu metro compares with the rest of Hawaii.

Insulation cost in Hawaii →

Insulation cost FAQs for Honolulu, HI

How much does attic insulation cost in Honolulu, HI?

A 1,500 sq ft attic blown to R-49 runs about $3,538 to $4,995 installed in Honolulu, HI, or roughly $2.78 per square foot. DIY with rented equipment cuts that by 45–60%.

Is insulation cheaper to DIY in Honolulu, HI?

Yes. Labor is most of an insulation bid, so blowing your own attic or installing batts typically saves 45–60% of the installed price. Spray foam, dense-pack wall retrofits and removal jobs are worth hiring out.

What drives insulation prices in Honolulu, HI?

Local labor rates, how far crews travel, attic access, whether old insulation has to be removed first, and the R-value your climate zone calls for. Material prices barely change between states — labor is the swing factor.

Are there rebates in Honolulu, HI?

The federal 25C tax credit covers 30% of insulation and air-sealing material costs up to $1,200 per year, and most utilities add their own attic and air-sealing rebates. Always check with your utility before booking work.

Materials for an insulation job in Honolulu, HI

Fiberglass Insulation Rolls R13Browse current prices and top-rated options on Amazon

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