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How Much Does R40 Insulation Cost in Portland, Maine?

Supply and install about R-40 attic insulation (blown-in, roughly 13-15 in) over the attic floor.

R40 Insulation in Portland, Maine typically costs $1.37 to $3.33 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.

R40 Insulation in Portland, Maine

$1.37 – $3.33

per sq ft

Prices in Portland are 1.0% lower than the national average for r40 insulation.

National average: $1.40 – $3.40 per sq ft

What you get at each price level

  • Basic

    $1.17 – $2.83 per sq ft

    Loose-fill fiberglass blown over the attic floor to an R-40 settled depth, eave baffles and depth markers set

  • Standard

    $1.37 – $3.33 per sq ft

    Blown fiberglass to R-40 with rafter baffles at the eaves, hatch dam, clearance kept around flues and recessed lights

  • Premium

    $1.72 – $4.17 per sq ft

    Blown fiberglass to R-40 with rafter baffles at every eave bay, hatch dam, insulated and weatherstripped hatch, depth markers

Cost Breakdown in Portland

ComponentCategoryPrice RangeUnit
Materialsmaterial$0.61 – $1.48sq ft
Laborlabor$0.49 – $1.18sq ft
Supplies & Othersupplies$0.16 – $0.40sq ft
Equipment & Disposalequipment$0.11 – $0.27sq ft
Prices adjusted for Portland local market conditions.

Cost Factors in Portland, Maine

What Affects Pricing

  • Materials ($0.63-$1.53 per square foot)
  • Labor ($0.49-$1.18 per square foot)
  • Supplies & Other ($0.17-$0.41 per square foot)
  • Equipment & Disposal ($0.11-$0.28 per square foot)

Local Price Adjustments

Material costs3.0% below avg
Labor costsAt national average

Frequently Asked Questions

References

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