Closed-cell Spray Foam Cost

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In 2025, the average cost to insulate a garage using closed-cell spray foam in the United States will vary between $3,000 and $8,000.Ā  This varies according to the size of the garage and the insulation utilized.

Closed-cell spray foam is a premium product, with prices ranging from $1 to $4.50 per square foot. It has been the most popular application because it provides excellent temperature control and reduces external noise. Read on to learn more about this spray foam.

What Influences the Cost of Spray Foam

Several factors might affect the total cost of insulating your garage or a room in your house.Ā  Below, we have listed the key ones:

Garage size: The cost of materials and labor increases with the size of the garage. Garages are considered large from 24’x30′.

R-value: Higher R-values will improve the thermal resistance of the chosen environment, but at the same time, they add expenses. For example, the R-value for walls ranges from R13 to R21, and for ceilings from R30 to R38.

Insulation type: Closed-cell spray foam is a little more expensive because it is denser and offers better insulation than open-cell foam and fiberglass. Its properties provide better moisture resistance and air tightness, which can lead to energy savings in the long run.

Labor costs: Depending on where you are, professional installation can range from $40 to $100 per hour. And consequently, depending on the size of the site, total labor costs can range from $1,000 to $7,000.

Cost Breakdown by Garage Size

To make things clearer for you, we’ve provided a table below summarizing the details by garage size:

Garage Size

Insulation Cost Range

Cost per Sq Ft (Walls)

Cost per Sq Ft (Ceiling)

Labor Cost Range

12ā€™x20ā€™ (1-Car)

$1,500āˆ’$5,000

$1.50āˆ’$3.50

$2.00āˆ’$4.50

$1,100āˆ’$3,500

20ā€™x20ā€™ (2-Car)

$2,000āˆ’$6,000

$1.50āˆ’$3.50

$2.00āˆ’$4.50

$2,200āˆ’$7,000

This table provides a clear breakdown of the costs for insulating 1- and 2-car garages with closed-cell spray foam, making it easier to plan your budget. Please note that this table includes both material and labor costs.

Invest For Long-term Benefits

As we’ve talked about, closed-cell spray foam insulation may appear to be a costly option at first, but it’s a long-term investment that pays for itself.Ā  If you are seeking for spray foam installation pros, you have come to the correct spot.Ā  Seamless SystemsĀ offers industry experience and positive client reviews.Ā  Call us today at (307) 680-6103 to receive a free quotation on our services.