SmartInsulationCalculator

2026 cost data

Insulation Cost in North Carolina (2026)

Insulation in North Carolina costs below the national average — ranked 12 of 51 for installed price. North Carolina sits in climate zone 3, so attics should hit R-49.

Insulation prices per square foot

Installed prices — material plus labor — adjusted for North Carolina labor rates.

Job typeInstalled cost / sq ft1,500 sq ft attic
Attic blown-in fiberglass (R-49)$1.67$2,498
Attic blown-in cellulose (R-49)$1.53$2,295
Attic fiberglass batts (R-38)$1.44$2,160
Wall batts, open framing (R-15)$1.57$2,363
Wall dense-pack retrofit (drill & fill)$2.34$3,510
Crawlspace floor or wall insulation$1.89$2,835
Basement rigid foam + framing$2.79$4,185
Open-cell spray foam (3.5")$1.75$2,633
Closed-cell spray foam (2")$3.24$4,860
Old insulation removal & disposal$1.40$2,093

What whole jobs cost

Typical projectLocal price range
Attic top-up (1,500 sq ft)$1,350 – $2,340
Full attic removal + re-insulate$2,880 – $4,860
Whole-house wall retrofit (2,000 sq ft home)$3,780 – $7,020
Crawlspace encapsulation + insulation$3,420 – $8,100
Garage conversion insulation$810 – $1,980
Whole-home spray foam (new build)$6,750 – $14,400

Climate zone 3 R-value targets

Department of Energy retrofit recommendations for this zone.

Attic
R-49
Walls
R-20
Floors
R-25
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

Cities in North Carolina

CharlotteRaleigh

Insulation cost FAQs for North Carolina

How much does attic insulation cost in North Carolina?

A 1,500 sq ft attic blown to R-49 runs about $2,123 to $2,997 installed in North Carolina, or roughly $1.67 per square foot. DIY with rented equipment cuts that by 45–60%.

Is insulation cheaper to DIY in North Carolina?

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 North Carolina?

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 North Carolina?

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 North Carolina

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

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