SmartInsulationCalculator

2026 cost data

Insulation Cost in Wisconsin (2026)

Insulation in Wisconsin costs close to the national average — ranked 30 of 51 for installed price. Wisconsin sits in climate zone 6, so attics should hit R-60.

Insulation prices per square foot

Installed prices — material plus labor — adjusted for Wisconsin labor rates.

Job typeInstalled cost / sq ft1,500 sq ft attic
Attic blown-in fiberglass (R-49)$1.91$2,858
Attic blown-in cellulose (R-49)$1.75$2,627
Attic fiberglass batts (R-38)$1.65$2,472
Wall batts, open framing (R-15)$1.80$2,704
Wall dense-pack retrofit (drill & fill)$2.68$4,017
Crawlspace floor or wall insulation$2.16$3,245
Basement rigid foam + framing$3.19$4,790
Open-cell spray foam (3.5")$2.01$3,013
Closed-cell spray foam (2")$3.71$5,562
Old insulation removal & disposal$1.60$2,395

What whole jobs cost

Typical projectLocal price range
Attic top-up (1,500 sq ft)$1,545 – $2,678
Full attic removal + re-insulate$3,296 – $5,562
Whole-house wall retrofit (2,000 sq ft home)$4,326 – $8,034
Crawlspace encapsulation + insulation$3,914 – $9,270
Garage conversion insulation$927 – $2,266
Whole-home spray foam (new build)$7,725 – $16,480

Climate zone 6 R-value targets

Department of Energy retrofit recommendations for this zone.

Attic
R-60
Walls
R-21
Floors
R-30
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 Wisconsin

Milwaukee

Insulation cost FAQs for Wisconsin

How much does attic insulation cost in Wisconsin?

A 1,500 sq ft attic blown to R-49 runs about $2,430 to $3,430 installed in Wisconsin, or roughly $1.91 per square foot. DIY with rented equipment cuts that by 45–60%.

Is insulation cheaper to DIY in Wisconsin?

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 Wisconsin?

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 Wisconsin?

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 Wisconsin

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

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