If you’re considering spray foam insulation for your home, cabin, garage, pole barn, or commercial building, one of the first decisions you’ll need to make is whether open cell or closed cell spray foam is the right choice.
Both types of spray foam provide exceptional insulation performance compared to traditional fiberglass and cellulose insulation, but they serve different purposes depending on the building, environment, and performance goals.
For homeowners and business owners throughout Central Minnesota and the Brainerd Lakes Area, understanding the differences between open cell and closed cell spray foam can help you make an informed investment that delivers long-term comfort, energy efficiency, and durability.
At Done Right Insulation, we help property owners determine which insulation solution best fits their project, ensuring every installation is designed for Minnesota’s demanding climate.
What Is Spray Foam Insulation?
Spray foam insulation is a high-performance insulation material that expands after application to fill gaps, cracks, seams, and hard-to-reach spaces.
Unlike traditional insulation, spray foam creates an airtight seal that dramatically reduces energy loss while helping control moisture and improve indoor comfort.
There are two primary types:
- Open Cell Spray Foam
- Closed Cell Spray Foam
Each offers unique benefits depending on where it’s installed.
What Is Open Cell Spray Foam?
Open cell spray foam has a lighter, softer structure that expands significantly after application.
Because it expands rapidly, it’s excellent for filling wall cavities and irregular spaces where maximum air sealing is needed.
Benefits of Open Cell Spray Foam
✔ Excellent air sealing
✔ Superior sound reduction
✔ Lower installation cost
✔ Flexible expansion
✔ Ideal for interior walls
✔ Great for attic applications
Open cell foam is especially popular in residential homes where sound control and energy efficiency are priorities.
Best Uses for Open Cell Spray Foam
Open cell spray foam performs well in:
- Interior walls
- Attics
- Ceiling cavities
- Basement rim joists
- Soundproofing between rooms
- New home construction
Because it remains slightly flexible after curing, it also accommodates minor structural movement over time.
What Is Closed Cell Spray Foam?
Closed cell spray foam has a much denser structure than open cell foam.
Instead of expanding into soft air pockets, it forms tightly packed cells that create exceptional insulation performance and moisture resistance.
Closed cell spray foam provides one of the highest R-values available among insulation products.
Benefits of Closed Cell Spray Foam
Closed cell spray foam offers:
✔ Higher R-value per inch
✔ Exceptional moisture resistance
✔ Structural reinforcement
✔ Air sealing
✔ Vapor barrier properties
✔ Long-lasting durability
It is often recommended for projects requiring maximum thermal performance and moisture protection.
Best Uses for Closed Cell Spray Foam
Closed cell spray foam is commonly installed in:
- Crawl spaces
- Pole barns
- Garages
- Metal buildings
- Commercial buildings
- Agricultural buildings
- Exterior walls
- Foundation walls
Because Minnesota experiences high humidity and freezing winters, closed cell foam performs exceptionally well in demanding environments.
Open Cell vs Closed Cell: Key Differences
| Feature | Open Cell | Closed Cell |
| Expansion | High | Moderate |
| Density | Low | High |
| R-Value | Good | Excellent |
| Moisture Resistance | Moderate | Excellent |
| Vapor Barrier | No | Yes |
| Sound Reduction | Excellent | Good |
| Structural Support | Minimal | Significant |
| Cost | Lower | Higher |
Which Spray Foam Is Better for Minnesota?
There isn’t a one-size-fits-all answer.
The right choice depends on:
- Building type
- Location
- Moisture exposure
- Budget
- Performance goals
For example:
Home Attics
Open cell often performs very well.
Pole Barns
Closed cell is usually the better option because it helps control condensation.
Metal Buildings
Closed cell provides superior moisture protection.
Commercial Buildings
Many commercial buildings benefit from closed cell spray foam because of its durability and higher insulation value.
Which Option Saves More Money?
Both products reduce energy bills.
However, because closed cell spray foam has a higher R-value, it generally delivers greater insulation performance in smaller spaces.
Open cell often costs less initially, making it an excellent value for many residential applications.
Our team helps homeowners choose the option that provides the best long-term return on investment.
Why Professional Installation Matters
Choosing the correct spray foam product is only part of the equation.
Proper installation ensures:
- Even coverage
- Complete air sealing
- Proper thickness
- Long-term performance
Poor installation can reduce the effectiveness of even the highest-quality insulation products.
That’s why working with experienced insulation professionals is essential.
Why Homeowners Choose Done Right Insulation
Done Right Insulation proudly serves homeowners and businesses throughout:
- Becker
- St. Cloud
- Sauk Rapids
- Sartell
- Brainerd
- Baxter
- Nisswa
- Pequot Lakes
- Crosslake
- And surrounding Central Minnesota communities
Our experienced team provides honest recommendations based on your building—not a one-size-fits-all sales approach.
Whether you need insulation for a home, cabin, garage, pole barn, or commercial building, we’ll help you choose the spray foam solution that delivers the best performance and value.
👉 Learn more about our spray foam insulation services here:
Closed Cell Spray Foam Insulation
Frequently Asked Questions
Is closed cell spray foam worth the extra cost?
For many Minnesota applications, yes. It provides higher insulation performance, moisture protection, and structural reinforcement.
Is open cell spray foam good for attics?
Yes. Open cell spray foam is commonly used in attics because it expands well and provides excellent air sealing.
Which spray foam lasts longer?
Both products are designed to last for decades when professionally installed.
Can spray foam lower my energy bills?
Absolutely. Both open cell and closed cell spray foam reduce air leakage, improve insulation performance, and help lower heating and cooling costs.
Get a Free Spray Foam Insulation Estimate
Choosing the right insulation doesn’t have to be complicated.
Whether you’re insulating a new home, upgrading an existing property, finishing a pole barn, or improving a commercial building, Done Right Insulation is here to help.
Our experienced team will evaluate your project, explain your options, and recommend the insulation solution that best fits your goals and budget.
Contact Done Right Insulation today for a FREE estimate and discover which spray foam insulation is right for your Minnesota property.