Question 1

How much does closed cell spray foam insulation cost?

Accepted Answer

Closed cell spray foam insulation ranges from $4.00-$14.00 per square foot. Materials contribute $1.80-$6.30 per sq ft, while labor costs typically fall between $1.40-$4.90 per sq ft.

Question 2

What's the difference in price between DIY and professional closed cell spray foam installation?

Accepted Answer

The main cost difference is in labor. Hiring a professional includes labor costs of $1.40-$4.90 per sq ft. DIY installation saves on labor, but requires renting or buying equipment, and can be more difficult to apply correctly.

Question 3

How does the thickness of closed cell spray foam affect the price?

Accepted Answer

The thicker the insulation, the more materials are needed, which increases the cost. Materials can range from $1.80 to $6.30 per sq ft, so the depth impacts the final price significantly.

Question 4

What other costs are involved with spray foam insulation?

Accepted Answer

Beyond materials and labor, you'll need to factor in supplies and other costs, which average around $0.48-$1.68 per sq ft. Equipment rental/disposal adds another $0.32-$1.12 per sq ft.

Question 5

Is closed cell spray foam insulation more expensive than other insulation types?

Accepted Answer

Closed cell spray foam is generally more expensive than other insulation options due to material and application requirements. Prices start at $4.00 per sq ft, varying depending on thickness and project complexity.

Component	Category	Price Range	Unit
Materials	material	$2 – $7	sq ft
Labor	labor	$2 – $6	sq ft
Supplies & Other	supplies	$1 – $2	sq ft
Equipment & Disposal	equipment	$0 – $1	sq ft

How Much Does Closed Cell Spray Insulation Cost in Seattle, Washington?

$5 – $17

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