How Much Does Spray Foam Insulation Cost to Install?

Are you tired of excessive energy bills and wondering how much the spray foam insulation cost for your home will be? This article is all you need to know about the insulation costs for different parts of your home. We will talk about the benefits of spray foam, factors affecting the cost of insulation, how to estimate spray foam insulation cost and the advantages of spray foam insulation. 

How Much Does Spray Foam Insulation Cost to Install (2023)

The Benefits of Spray Foam Insulation

Spray foam is essential in every building to experience maximum comfort and save energy costs by 30%. Spray foam insulation is applied to seal gaps, holes, and crevices around the house that can lead to heat loss. As a result, spray foam insulation makes a building energy efficient by significantly reducing heat loss and energy consumption. 

Spray foam also improves the air quality in your home by locking out the bad air. In addition, it resists mold growth by preventing moisture buildup in your home. Also, the structure of spray foam makes it a suitable option to soundproof your home. 

The Factors That Affect Spray Foam Insulation Costs

The national average cost of spray foam insulation is $5000. In spite of the numerous benefits spray foam insulation provides, many homeowners consider it an expensive procedure. The following are some factors affecting spray foam insulation cost:

The Factors That Affect Spray Foam Insulation Costs

Material Costs

Spray foam insulation comprises two chemicals; isocyanate and polyol resin. The cost of getting high-quality material to make spray foam is expensive and a factor that must be considered when estimating the insulation cost. Protective equipment such as gloves, goggles, and overalls are also required for the installation. 

Labor Costs

Hiring a professional to carry out spray foam insulation is expensive. Professionals charge based on the size of the work, complexity, location, or person hours. A professional would charge $50 to $100 per hour to install spray foam. Therefore the amount of time needed to insulate your space would affect spray foam insulation cost. 

Application Area Size

The area size to be insulated determines the amount of time required for proper insulation, which affects the cost of spray foam insulation. A big application area size would require more spray foam than a small area size. For example, the spray foam insulation cost for a 5000sq ft house is different for a 1000 sq ft house.


The thickness of spray foam affects insulation cost because the thicker the insulation, the higher the cost. When the thickness of the area to be insulated is high, it means more spray foam would be required for proper insulation. 

Open-cell foam with a thickness of 1 inch costs between $0.4 to $0.5 per sq foot, while closed-cell with a thickness of 3 inches costs between $3.75 to $8.7 per sq foot.  

Type of Spray Foam Insulation

There exists two types of spray foam insulation; closed-cell spray foam and open-cell spray foam. The type of spray foam insulation used for insulation greatly impacts the cost of spray foam insulation. Closed-cell is dense and offers a higher R-value than open-cell spray foam. 

Both types of spray foam have excellent thermal insulating properties. Closed-cell spray foam insulation costs $1.2 to $1.5 per sq foot, while open-cell spray foam insulation costs $0.45 to $0.75 per sq ft. 

Two people spray foam insulation with Kraken Fast coat


The location of the area to be insulated is another important factor that affects spray foam insulation cost. The more difficult it is to insulate a location, the higher the cost. For example, spray foam attic insulation costs between $1500 to $4000, while the spray foam insulation cost for garage can be as high as $7000. 


Spray foam insulation cost is different for various areas of the home depending on the accessibility of the area. Hard-to-reach areas like crawl spaces or a high ceiling will require more labor, which means a higher insulation cost.

On the other hand, when an area is easily accessible, it would be easy to insulate and cost less. For example, crawl space insulation costs between $0.7 to $1.5 per square foot, while roof insulation costs between $2000 to $3500

Additional Services

Additional services such as removing old insulation or mold are additional costs that can add to the insulation cost. Many contractors take up these other services to deliver a clean job. The cost of getting additional services, such as removing mold or old insulation, averages between $1000 to $3000, depending on the job's complexity.

Local Regulations

Local regulations can affect the spray foam insulation cost in different ways. Some local regulations can stipulate the type of insulation to be used, how the insulation is done, and contracting only certified installers. 

Local regulations mean buildings are subjected to inspection and can create a monopoly in the hands of certified installers. Because of that monopoly, there is likely to be a hike in spray foam insulation prices.  

How to Calculate Diy Spray Foam Insulation Cost?

DIY Spray foam Insulation cost is less expensive than the cost of hiring a professional. Many homeowners take DIY spray foam insulation as an alternative by getting the right spray foam insulation kit and following the right guideline. The following steps will guide you on how to estimate the cost of DIY spray foam insulation:

Measure the Area to Be Insulated

The first step is to know the total square footage of the area to be insulated. To do this, measure the length, width, and height of the where you want to insulate. For example, an area with a length of 100 ft and width of 100ft has a total dimension of 1000sq ft. 

Determine The Insulation Type

Choose the type of spray foam insulation you want for your project. Closed-cell spray foam costs more and offers a higher R-value than open-cell spray foam. 

Multiply The Area by The Price of Spray Foam per Square Feet

To calculate the insulation cost, multiply the dimension of the area to be insulated by the spray foam insulation cost per sq ft. Therefore, the spray foam insulation for a 1000sq ft area equals $1200 at a spray foam cost sq feet price of $1.2.

Examples of Spray foam Insulation Cost

Lawn Starter

Home Advisor

Open-cell Spray Foam (Price per square foot) 

$0.45 - $0.75

$0.44 - $0.65

Closed-cell Spray Foam (Price per square foot)

$1.0 - $1.6

$1.00 - $1.5


$2240 - $5735

$930 - $2100


$1875 - $6,050

$2400 - $8400


$1700 - $5070

$1500 - $3500

Crawl Space

$1,070 - $6170

$1000 - $5900

*Spray foam Insulation Cost Data according to Lawnstarter and HomeAdvisor 

Consider DIY Spray Foam Insulation to Cut The Cost of Spray Foam Insulation

DIY Spray foam insulation is a cost-effective way to insulate your home. DIY spray foam insulation requires strict adherence to guidelines and instructions. Safety precautions such as wearing the right protective equipment are important. 

DIY Spray foam insulation helps reduce energy loss in your home, save energy costs, and increase comfort in your home. Kraken Fast Coat Product is the spray foam product you need for home insulation. Fast Coat Product costs $1 for 1-inch thick spray foam; you can cover 20sq ft with one can. 

Using the Fast Coat product for DIY spray foam saves costs. For example, Spray foam insulation cost for attic with an area of 500sq will cost $500. 

Advantages of Spray Foam Insulation vs Spray Foam Insulation Cost

Spray foam insulation provides better thermal insulating ability than other forms of insulation because it seals every crevice or hole in a building. The following advantages are some of the reasons why spray foam insulation cost will always be a wise investment: 

Advantages of Spray Foam Insulation vs Spray Foam Insulation Cost

Energy Savings

Spray foam insulation can save energy consumption by the HVAC system in your home by 30%. By making your home air sealed, spray foam insulation reduces energy loss caused by air filtration. With spray foam insulation, less energy is consumed by the HVAC system to keep the home warm.


Spray foam keeps the temperature in your home consistent and comfortable all year round. Spray foam blocks hot air during summer and reduces cold air during winter. Spray foam also makes the home comfortable by reducing drafts, which is a major source of discomfort in many homes. 

Air Sealing

Spray foam makes a structure air-sealed by filling every gap, hole, or opening. Spray foam insulation seals the air in your home and reduces air filtration. Spray foam is made when two chemical products react to cause an expansion of about 60 times its volume. 

Moisture Control

Excess moisture is a problem in every structure, affecting the integrity of builds or even mold growth. Spray foam insulation is used to control moisture buildup in buildings. If you are looking to create a vapor barrier in your home, spray foam insulation is a great choice. In addition, closed-cell spray foam insulation helps during flooding because it does not absorb moisture.  

High R-Value

Spray foam insulation offers one the highest R-value of all the insulation methods. The higher the R-value, the better the efficiency of the insulation. The R-value of spray foam insulation ranges from 4 to 7 inches depending on the type of insulation used.  


Another edge spray foam insulation has over other insulation types is its durability. Spray foam insulation can last up to 30 years without replacement. The durability of spray foam insulation makes it a wise investment since the cost of insulation can be recouped over a number of years in energy savings.


Spray foam insulation is versatile, and it is the best coverage for different parts of a building. 

In terms of installation, spray foam insulation can be used for roof insulation, no matter the shape of the roof. In addition, spray foam adheres to a wide range of materials. 


Spray foam insulation is eco-friendly as they are made from non-toxic substances. Spray foam does not emit hydrofluorocarbon (HFC) gases when installed correctly. This makes them suitable for residential and commercial buildings.

Nevertheless, it is important to install spray foam properly and allow it to cure in order to avoid complications adequately. 

Pest Control

Pest control is another intrinsic benefit of using spray foam for your home insulation. Spray foam insulation seals openings, cracks, or holes in buildings. Also, spray foam offers no food value to pests.  

Health Benefits 

Spray foam is environmentally friendly, reducing the number of allergens, pollutants, and toxins by keeping the building air-sealed. Spray foam helps improve the air quality in buildings as bad air from the environment is reduced significantly. This makes spray foam suitable for people with allergies or asthma. In addition, using spray foam reduces the carbon footprint in the environment as less energy is consumed.

Fire Resistance (Somes are fire resistant)

Spray foam retards fire when mixed with fire retardants chemical. In the case of an outbreak, the foam does not burn easily and this can make a possible room of escape for victims or for firefighters to rescue the situation.

Low Maintenance

Spray foam insulation does not require regular maintenance. Once they are installed, they can last up to a lifetime.  

Increased Home Value

Spray foam insulation is a way to increase the value of your home or building. Insulation is important in every home, potential home buyers would rather get an insulated home that is energy efficient and comfortable. 

Noise Reduction

Spray foam insulation is a good option for reducing noise in your home. By reducing air filtration in your home, spray foam also doubles its benefits with soundproofing abilities. 

Easy Installation

Spray foam insulation can be installed as a DIY project by following the right guidelines and using the right equipment. Nevertheless, you can also get a professional with experience to install it. 

FAQs About Spray Foam Insulation Cost

Is Spray Foam Insulation Really Worth The Cost?

Spray foam insulation is a wise investment as it can reduce energy consumption in your home by 30%. Spray foam insulation is also durable and can last up to 30 years without the need for maintenance or replacement. 

How Much Does Spray Foam Insulation Cost Per Square Foot?

Spray foam insulation cost per square foot ranges from $1 to $1.6 depending on the type of spray foam and the manufacturer. Fast Coat costs $1 for 1-inch thick spray foam and offers an R-value of 5.66.

Is Spray Foam Insulation More Expensive Than Other Types Of Insulation?

The most expensive insulation type is spray foam insulation. The average cost of spray foam insulation is $5000, which is more than the cost of using other insulation types.

Can I Install Spray Foam Insulation Myself To Save Cost?

Yes, you can install spray foam insulation as a DIY project and save the cost of hiring a professional.

What Factors Affect The Cost Of Spray Foam Insulation?

So many factors can affect the cost of spray foam insulation, such as labor costs, the thickness of spray foam, the type of spray foam insulation used, location, etc.

How Long Does It Take To Install Spray Foam Insulation, And Does That Affect The Cost?

Spray foam insulation takes 2 to 4 hours to install and can take longer, depending on the size of the job. The time spent on installation is charged under labor costs, and it can affect the insulation cost. Considering that the more hours spent on the job, the higher the labor cost. 

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Author : Krakenbond Team

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