How Much Does Attic Insulation Cost in Fresno? (2026 Pricing Guide)

The most common question we get in Fresno is simple: what does attic insulation actually cost? For most single-family homes, a blown-in fiberglass attic job runs between $1,400 and $2,500. Larger homes, steep or cut-up attics, and full removal-and-replacement projects push higher.

Three things drive the price. First, square footage — more attic floor means more material and labor. Second, target R-value — going from R-19 to R-38 takes more material than a light top-up. Third, condition — if the existing insulation is rodent-damaged, moldy, or compressed, it needs to be removed and the attic sanitized before new insulation goes in, which adds cost but restores far more performance.

Per square foot, expect roughly $1.50 to $3.50 installed for blown-in fiberglass, depending on depth and access. Removal and disposal of old material typically adds $1 to $2 per square foot.

Here's the part most homeowners miss: air sealing. Spending a little to seal top plates and penetrations before insulating is what makes the R-value actually pay off on your summer bills. Skipping it is the most common way people waste money on insulation.

Every Masterguard estimate is free and written, so you see the real number for your home — square footage, R-value, removal if needed, and air sealing — before any work starts.