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2026 cost data

Insulation Cost in San Antonio, TX (2026)

Insulation contractors in San Antonio, TX price below the national average. Here is what attic, wall, crawlspace and spray foam work should cost in the San Antonio metro in 2026.

Insulation prices per square foot

Installed prices — material plus labor — adjusted for San Antonio, TX labor rates.

Job typeInstalled cost / sq ft1,500 sq ft attic
Attic blown-in fiberglass (R-49)$1.63$2,442
Attic blown-in cellulose (R-49)$1.50$2,244
Attic fiberglass batts (R-38)$1.41$2,112
Wall batts, open framing (R-15)$1.54$2,310
Wall dense-pack retrofit (drill & fill)$2.29$3,432
Crawlspace floor or wall insulation$1.85$2,772
Basement rigid foam + framing$2.73$4,092
Open-cell spray foam (3.5")$1.72$2,574
Closed-cell spray foam (2")$3.17$4,752
Old insulation removal & disposal$1.36$2,046

What whole jobs cost

Typical projectLocal price range
Attic top-up (1,500 sq ft)$1,320 – $2,288
Full attic removal + re-insulate$2,816 – $4,752
Whole-house wall retrofit (2,000 sq ft home)$3,696 – $6,864
Crawlspace encapsulation + insulation$3,344 – $7,920
Garage conversion insulation$792 – $1,936
Whole-home spray foam (new build)$6,600 – $14,080

Climate zone 2 R-value targets

Department of Energy retrofit recommendations for this zone.

Attic
R-49
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 San Antonio metro compares with the rest of Texas.

Insulation cost in Texas →

Insulation cost FAQs for San Antonio, TX

How much does attic insulation cost in San Antonio, TX?

A 1,500 sq ft attic blown to R-49 runs about $2,076 to $2,930 installed in San Antonio, TX, or roughly $1.63 per square foot. DIY with rented equipment cuts that by 45–60%.

Is insulation cheaper to DIY in San Antonio, TX?

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 San Antonio, TX?

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 San Antonio, TX?

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 San Antonio, TX

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

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