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Insulation Cost in Washington

Average insulation price in Washington is $1.30 per square foot or about $3.19 per sq ft installed. Prices vary by supplier, region, and quantity. Use the calculator below for your project size.

Per square foot

$1.30

Washington regional avg

National avg

$1.20

Per square foot

Regional index

108

(100 = US avg)

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square foot

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Estimated cost (US avg)

Why insulation costs more or less in Washington

Washington has higher material costs than the national average — typically driven by transportation, demand, and local labor rates. Expect quotes to vary ±15% within the state depending on city and supplier.

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