If you are planning to insulate your home or business, you have probably come across two popular types of spray foam insulation – closed cell and open cell. Both types are designed to provide excellent insulation and can improve energy efficiency in your property. However, there are some differences between the two, and choosing the right type for your needs can be a challenging task. In this article, we will compare closed cell spray foam insulation vs open cell spray foam insulation, so you can make an informed decision.
What is Closed Cell Spray Foam Insulation?
Closed cell spray foam insulation is a type of insulation made up of tiny, closed cells that are filled with a gas. The cells are packed tightly together, creating a dense foam that has excellent insulation properties. The foam is usually made from polyurethane and is applied to surfaces using a spray gun. When applied, the foam expands and hardens, creating a seamless and airtight barrier that can prevent air and moisture infiltration.
What is Open Cell Spray Foam Insulation?
Open cell spray foam insulation is another type of insulation made up of tiny, open cells that are filled with air. The cells are less densely packed than those in closed cell spray foam insulation, which gives the foam a softer and more flexible texture. The foam is also made from polyurethane and is applied to surfaces using a spray gun. When applied, the foam expands and hardens, creating a semi-permeable barrier that can allow air and moisture to pass through.
Composition
Closed cell spray foam insulation and open cell spray foam insulation are both made from polyurethane. However, the manufacturing process and the chemicals used are different. Closed cell foam contains a blowing agent that produces a higher density foam and results in a more rigid and compact structure. Open cell foam uses a different blowing agent, which produces a lighter, softer, and more flexible foam.
R-Value
R-value is a measure of insulation’s ability to resist heat transfer. Closed cell spray foam insulation has a higher R-value per inch than open cell spray foam insulation, making it more effective at insulating. The R-value of closed cell foam is typically between 6 and 7 per inch, while the R-value of open cell foam is around 3.5 per inch.
Density
Closed cell spray foam insulation is denser and more rigid than open cell spray foam insulation. The density of closed cell foam is typically between 1.5 and 2.0 pounds per cubic foot, while the density of open cell foam is around 0.5 pounds per cubic foot.
Cost
The cost of spray foam insulation depends on several factors, such as the size of the area to be insulated, the type of foam, and the installation method. Closed cell spray foam insulation is generally more expensive than open cell spray foam insulation, mainly due to its higher density and R-value. However, closed cell foam can provide better long-term savings on energy bills due to its superior insulation properties.
Installation
Both closed cell and open-cell spray foam insulation require professional installation by a trained technician. The installation process is similar for both types of foam and involves spraying the foam onto the surfaces to be insulated. However, due to its denser structure, closed cell foam requires more care during installation to prevent.
Moisture Barrier
Closed cell spray foam insulation acts as a moisture barrier, preventing moisture from penetrating the surface. The closed cell structure of the foam makes it impermeable to water vapor, which can help prevent mold and mildew growth. Open cell spray foam insulation, on the other hand, is not a moisture barrier and can allow moisture to penetrate the surface.
Air Barrier
Both closed cell and open cell spray foam insulation can act as an air barrier, preventing air leaks and drafts. However, closed cell spray foam insulation provides a more effective air barrier due to its denser structure and higher R-value.
Sound Barrier
Closed cell spray foam insulation has excellent soundproofing properties and can help reduce noise transmission from outside. Open cell spray foam insulation, on the other hand, does not provide as effective soundproofing as closed cell foam.
Health and Safety
Both closed cell and open cell spray foam insulation can release toxic fumes during installation, so it’s important to ensure proper ventilation. Closed cell foam can also release toxic fumes if it catches fire, so it’s important to install fire-resistant materials around the foam. Open cell foam, on the other hand, does not release toxic fumes if it catches fire.
Environmental Impact
Both closed cell and open cell spray foam insulation have an impact on the environment. The chemicals used to manufacture the foam can be harmful to the environment, and the foam cannot be recycled. However, closed cell foam has a higher environmental impact than open cell foam due to its higher density and the chemicals used in its manufacture.
Durability and Lifespan
Closed cell spray foam insulation is more durable and has a longer lifespan than open cell spray foam insulation. Closed cell foam can last up to 30 years, while open cell foam has a lifespan of around 20 years.
Maintenance
Both closed cell and open cell spray foam insulation require little to no maintenance once installed. However, it’s important to inspect the foam periodically to ensure it has not been damaged or displaced.
Conclusion
When it comes to closed cell spray foam insulation vs open cell spray foam insulation, the choice depends on your specific needs and budget. Closed cell foam provides a higher R-value and a more effective moisture and air barrier, making it ideal for areas with high moisture and temperature fluctuations. Open cell foam, on the other hand, is a more affordable option and can be used in areas where moisture is not a concern. Consult with a professional insulation contractor to determine the best option for your property. Contact us today!
Yes, closed cell foam provides superior insulation and can result in long-term savings on energy bills.
No, open cell foam is not impermeable to water vapor and cannot act as a moisture barrier.
The manufacturing process and chemicals used can have an impact on the environment, and the foam cannot be recycled.
Spray foam insulation requires little to no maintenance, but it’s recommended to inspect it periodically to ensure it’s in good condition.
Closed cell foam can last up to 30 years with proper installation and maintenance.
