If you’ve been researching spray foam insulation for your home in Chicagoland, you’ve probably come across the terms open cell and closed cell. While both offer powerful insulation and air sealing, they have unique properties that make them better suited for different parts of your home.
In this guide, we’ll break down the difference between open cell and closed cell spray foam, so you can make an informed decision. As Chicagoland’s trusted insulation experts, ARC Insulation installs both and can help you choose the right type for your project.
What Is Spray Foam Insulation?
Spray foam insulation is a two-in-one solution that both insulates and seals air leaks. It expands on contact to fill cavities, cracks, and gaps, making it ideal for creating a tight building envelope.
But not all spray foam is the same. The two main types, open cell and closed cell, differ slightly in structure, performance, and application.
Open Cell Foam vs Closed Cell Foam Insulation
Let’s look at how these two types compare:
Open Cell Spray Foam
- Structure: Contains partially open cells, making it soft and flexible
- Expansion: High expansion rate, ideal for filling irregular cavities
- Cost: Lower cost per square foot
Uses:
- Interior walls (for soundproofing)
- Hard-to-reach areas
- Spaces where moisture control is not critical
Closed Cell Spray Foam
- Structure: Fully closed cells make it dense and rigid
- Performance: Higher R-value per inch (great thermal performance)
- Moisture Barrier: Resists water and vapor
- Structural Strength: Adds rigidity to walls and roof decks
Uses:
- Attics and roof decks
- Crawl spaces and basements
- Exterior walls
- Areas requiring moisture or vapor control
Which Type of Spray Foam Is Right for You?
Choosing between spray foam insulation (open vs closed cell) depends on your home’s layout, goals, and budget. Open cell may be best for interior comfort and sound control, while closed cell is ideal for extreme temperature protection and moisture-prone areas.
ARC Insulation will assess your home and recommend the most effective approach, backed by over 30 years of experience.
Don’t DIY: Trust the Pros for Spray Foam Installation
Spray foam insulation must be installed precisely to work safely and effectively. Mistakes can result in:
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Poor performance
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Off-gassing or trapped moisture
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Costly future repairs
Our certified technicians at ARC Insulation are trained in best practices and safety standards. Whether you need open or closed cell spray foam, we’ll ensure it’s installed correctly the first time.
Get a Free Spray Foam Quote Today
Whether you’re researching closed cell versus open cell spray foam or looking for reliable foam insulation contractors, ARC Insulation has you covered.
