LEXINGTON Blog

A Guide to Understanding Open Cell vs. Closed Cell Foam Insulation

Open cell vs. closed cell foam insulation is rapidly gaining popularity among homeowners as well as businesses alike. It is made by mixing two chemicals, creating a foam that expands then hardens, forming a barrier that helps keep indoor temperatures consistent plus reduces energy waste. Spray foam insulation done by our Koala experts is also known for its ability to block out noise, moisture, or even pests, making it a popular choice for those looking to improve the overall comfort and efficiency of their homes or buildings.

What Is Spray Foam Insulation?

Spray foam insulation is sprayed onto surfaces as a liquid, followed by expansion to form a solid, seamless sealant layer. It is typically made from polyurethane or another similar material that is mixed with a blowing agent, then sprayed onto the surface to be insulated. The resulting foam provides excellent insulation by filling gaps and sealing off potential air leaks. It also creates a barrier that helps to keep indoor temperatures consistent, plus reducing energy waste.

Open-cell foam and closed-cell foam are the primary types of spray foam insulation. Open-cell is softer, more flexible than closed-cell foam, and has a lower R-value. Closed-cell foam's key difference is the density and rigidity, providing a higher R-value. That said, both types offer excellent thermal insulation properties. They help reduce energy waste and lower heating and cooling costs.

What Is Closed Cell Foam?

Closed-cell foam insulation is made from polyurethane but with the addition of a different type of chemical makeup for the blowing agent, such as a hydrofluorocarbon (HFC) or hydrochlorofluorocarbon (HCFC). This blowing agent causes a chemical reaction, so the mixture expands and creates closed cell structures, which give the foam its rigid, dense texture.

Closed-cell spray foam is commonly used in areas where superior insulation performance is required to seal, such as in exterior walls, roofs, and basements. It's also often used in commercial or industrial settings, which helps reduce energy waste and lower heating and cooling costs.

What is Open Cell Foam?

Open-cell foam insulation is typically made from a chemical compound known as polyurethane, which is mixed with a liquid form of foaming agent such as water or carbon dioxide. The blowing agent causes the mixture to expand, then creates open pocket cells, which give the foam its soft, sponge-like texture.

Open-cell spray foam is commonly used in areas where soundproofing or noise reduction is a concern, such as in interior walls or ceilings. It's also often used in residential homes, where it provides effective thermal insulation in areas where a high R-value is not required, helping keep the heat in the home.

Spray foam insulation is an excellent option for homeowners or builders looking to increase the energy efficiency of their homes or buildings. With its superior properties, spray foam insulation helps to reduce energy waste, lower heating and cooling costs, plus improve indoor comfort levels. However, proper installation is critical to ensuring the effectiveness and safety of the insulation, so choosing between open cell vs closed cell foam is easy when you rely on one of our technicians to help.

Professionally installed insulation will save you money in the future and put less demand on your energy resources. It will help to keep the temperature instead of your home consistent from room to room. Our experts at Koala Insulation of Lexington are here to help get your home running more comfortable all while saving you money on your energy bills.