How Much Is Spray Foam Insulation (Per ft², Types & Factors)

celebrated for its excellent sound-dampening capabilities and air-tight seals; spray foam is a fantastic choice for insulating your home. While the average cost of spray foam insulation per square foot is roughly $1.50 to $5.00, this is not a solid figure, and things like the R-rating of the foam, the area you have it installed in, and the extent of the insulation project heavily impact the final cost per square foot. If you’re wondering how much you’d have to spend on your spray foam insulation installation project, this blog is just for you.

The Cost Of Installing Spray Foam Insulation: Facts, Factors & Figures

Whether it’s the sweltering summers of Texas or the frosty winters of Washington, a high-quality and durable insulation is the best way to keep yourself safe and comfortable. But you might be wondering: “How much is spray foam insulation?” We’re glad you asked! Here’s a look at how much you’d need to spend on your insulation installation based on type, location, and the state of your property.

Take notes and grab a calculator as we break it down for you!

The Type Of Spray Foam

Not all spray foam is created equal, and depending on the area you want treated and the amount of moisture it’s exposed to, the cost of spray foam insulation per square foot varies dramatically. Below are the two types of spray foam insulation and their prices.

• Open-Cell Spray Foam: Used in interior walls and attics in areas that don’t experience temperature extremes, this insulation can cost anywhere from $1.50-3.50 to set up per square foot.
• Close-Cell Spray Foam: But for areas like basements and exterior walls that experience more moisture damage, the cost per square foot, including installation, is about $3-5 per square foot.

The Size Of The Area

The main factor impacting the total cost is how big the area that requires the spray foam insulation is. Remember, the more square footage that needs to be treated, the more you’ll have to spend. Here’s a look at the average cost for varying area sizes.

• 800sqft: $1,200-$4,000
• 1,200sqft: $1,800-$6,000
• 1,800sqft: $2,700-$9,000
• 2,500: $3,750-$7,500

Project Size

As the previous point shows, most contractors will offer a much more pocket-friendly rate as the scope of the project grows. For smaller projects, you may be expected to pay a flat rate of $1000-2000.

The Area Of The House

Different areas of the home demand different treatments. For example, you may require thicker insulation on outer walls compared to partition walls. Add to that the type of insulation and the accessibility factor, and the cost can look very different in different areas of the home. Here is a look at the average price of spray foam insulation installation in different parts of the house.

• Attic: $3,000-8,000
• Basement: $2,5000-9000
• Crawlspace: $2,000-4000
• Garage: $2,000-$7000rim Joists: $2,000-2,500
• Around HVAC: $1,500-2,500
• Exterior Walls: $4,000-10,000

Ease Of Accessibility

Some areas are easier to reach than others. If you’re having your walls and doors insulated, the team will have a much easier time reaching those areas, completing the job quickly, and charging a lower price. But if it’s attic corners or the ceiling you want insulated, expect the cost to be much higher due to the effort, material, and extra equipment involved.

The Age Of The Property

Is this a new construction? Or are you updating your previous insulation? New constructions have easily accessible wall cavities and, therefore, insulation costs per square foot are much lower. But if it’s old insulation they need to remove to add the new insulation, expect the cost per square foot to jump much higher.

Local Labor Costs

Do you live in a busy city? Or is it a small town instead? Depending on where you live and the complexity of the project, the cost of labor per square foot for spray foam insulation can be anywhere from $0.50 to $2.00 or higher.

Conclusion

To conclude, the question of ‘how much is spray foam insulation’ is a bit tricky to answer. Though the average price ranges between $1.50 and $5.00 per square foot, several things, such as the type of insulation you need, the local labor costs, and the area you want to insulate, greatly impact the final price per square foot. We hope this blog gave you a clearer idea of the cost of spray foam insulation. For more questions, drop us a line!

FAQs

How long does spray foam insulation last?

Depending on the installation and maintenance, spray foam insulation can last anywhere between 20-80 years.

What is the off-gassing period for spray foam insulation?

Typically, homes need to stay empty for at least 24 hours upon initial installation.

Does spray foam insulation add structural strength?

No, but close-cell spray foam can give the structure a minuscule boost.