What is the difference between closed-cell and open-cell spray foam?
Understand which spray foam type may be better for your project.
Yuri
Last Update 2 months ago
What is the difference between open-cell and closed-cell spray foam?
Open-cell and closed-cell spray foam are both polyurethane spray foam insulation products, but they are used for different project needs.
The right choice depends on the building area, moisture conditions, required insulation value, available space, and project goals.
Open-cell spray foam
Open-cell spray foam is lighter and softer. It expands more during application and is often used for interior insulation where air sealing and sound reduction are important.
Open-cell spray foam may be used for:
Closed-cell spray foam
Closed-cell spray foam is denser, stronger, and provides a higher insulation value per inch. It is often used where space is limited or where moisture resistance, strength, or added building envelope performance is important.
Closed-cell spray foam may be used for:
Which one is better?
There is no single best option for every project. Open-cell foam may be better for some interior applications, while closed-cell foam may be better for areas that need higher insulation value, added strength, or moisture resistance.
How Spray Foam GL helps
Spray Foam GL reviews your project details, photos, location, approximate measurements, and site conditions before recommending the best spray foam option.
For the most accurate recommendation, please send photos of the work area, measurements, and any concerns such as moisture, access, existing insulation, or renovation conditions.
Open-cell and closed-cell spray foam are both polyurethane spray foam insulation products, but they are used for different project needs.
The right choice depends on the building area, moisture conditions, required insulation value, available space, and project goals.
Open-cell spray foam
Open-cell spray foam is lighter and softer. It expands more during application and is often used for interior insulation where air sealing and sound reduction are important.
Open-cell spray foam may be used for:
- Interior wall cavities
- Attics
- Sound reduction areas
- Renovation projects
- Areas where a lighter foam is suitable
Closed-cell spray foam
Closed-cell spray foam is denser, stronger, and provides a higher insulation value per inch. It is often used where space is limited or where moisture resistance, strength, or added building envelope performance is important.
Closed-cell spray foam may be used for:
- Basements
- Exterior walls
- Garages
- Crawl spaces
- Commercial insulation
- Areas with limited insulation depth
- Projects where moisture control is important
Which one is better?
There is no single best option for every project. Open-cell foam may be better for some interior applications, while closed-cell foam may be better for areas that need higher insulation value, added strength, or moisture resistance.
How Spray Foam GL helps
Spray Foam GL reviews your project details, photos, location, approximate measurements, and site conditions before recommending the best spray foam option.
For the most accurate recommendation, please send photos of the work area, measurements, and any concerns such as moisture, access, existing insulation, or renovation conditions.