SmartInsulationCalculator

2026 cost data

Insulation Cost in Missouri (2026)

Insulation in Missouri costs close to the national average — ranked 14 of 51 for installed price. Missouri sits in climate zone 4, so attics should hit R-60.

Insulation prices per square foot

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

Job typeInstalled cost / sq ft1,500 sq ft attic
Attic blown-in fiberglass (R-49)$1.68$2,525
Attic blown-in cellulose (R-49)$1.55$2,321
Attic fiberglass batts (R-38)$1.46$2,184
Wall batts, open framing (R-15)$1.59$2,389
Wall dense-pack retrofit (drill & fill)$2.37$3,549
Crawlspace floor or wall insulation$1.91$2,867
Basement rigid foam + framing$2.82$4,232
Open-cell spray foam (3.5")$1.77$2,662
Closed-cell spray foam (2")$3.28$4,914
Old insulation removal & disposal$1.41$2,116

What whole jobs cost

Typical projectLocal price range
Attic top-up (1,500 sq ft)$1,365 – $2,366
Full attic removal + re-insulate$2,912 – $4,914
Whole-house wall retrofit (2,000 sq ft home)$3,822 – $7,098
Crawlspace encapsulation + insulation$3,458 – $8,190
Garage conversion insulation$819 – $2,002
Whole-home spray foam (new build)$6,825 – $14,560

Climate zone 4 R-value targets

Department of Energy retrofit recommendations for this zone.

Attic
R-60
Walls
R-20
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 Missouri

Kansas CitySt. Louis

Insulation cost FAQs for Missouri

How much does attic insulation cost in Missouri?

A 1,500 sq ft attic blown to R-49 runs about $2,146 to $3,030 installed in Missouri, or roughly $1.68 per square foot. DIY with rented equipment cuts that by 45–60%.

Is insulation cheaper to DIY in Missouri?

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 Missouri?

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 Missouri?

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 Missouri

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

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