Attic Insulation Installation Costs

The average cost of insulating an attic is between $1,200 and $6,000, depending on the attic size, type of insulation, and geographical location. Several factors impact the total attic insulation cost and understanding these variables helps homeowners plan their budgets for this popular home improvement project that significantly increases energy efficiency, improves comfort, and reduces utility bills.

Spray foam insulation cost is primarily influenced by the square footage of your attic and the R-value required for your climate zone. Other important factors include the complexity of installation (in particular, spray foam requires specialized equipment) and whether any attic repairs or other preparation are required. In addition, if you choose to remove existing insulation, special handling and disposal fees may be applied.

The most affordable attic insulation option is fiberglass batt, typically costing $0.75 to $1.50 per square foot, although it does have a relatively low R-value. Another option is radiant barriers, which are often used in hot climates to help lower energy bills by reflecting incoming sunlight. Rigid foam board and structural insulated panels are more expensive at $3 to $7 per square foot but provide superior air sealing and higher R-values, respectively.

Blown-in or loose fill insulation, on the other hand, provides more comprehensive coverage and hugs the attic joists’ unique contours, providing an R-value of between $0.83 and $3.60 per square foot. It’s commonly made from fiberglass, cellulose or rock wool fiber and usually only takes one day to install. Insulation rebates and other incentives are frequently offered by local utilities or governments.

“Spray Foam Insulation Phoenix
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“Phoenix, AZ 85015
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(602)825-3298