Open Cell vs Closed Cell Foam Insulation: Which is Better for My Home?

Loft insulation in the UK  is one of the most preferred insulation types across the globe by homeowners and commercial establishments alike. They offer two choices namely, closed & open cell foam. On installing foam insulation, both heat flow and airflow get blocked, thus increasing the comfort of the home. It also helps reduce energy bills significantly.

Open Cell vs Closed Cell Foam

You need to research both to identify the most suitable solution to meet your specific needs. Although both are amazing insulators, the closed-cell type is not suitable for the roof deck. They both create air seals, thereby increasing energy efficiency and making your home more comfortable.

Open Cell vs Closed Cell Spray Foam Composition

Open-cell type is easy to install, pliable and lightweight. On the other hand, the closed-cell type is quite dense and rigid. If you desire to install new wiring, then the open cell type being pliable will best suit your needs. Simply push the wires through the open cell foam to the desired area using fish tape.

But in closed-cell type, wiring is not possible. However, this type of Loft insulation is well-known for its durability and rigid structure. It is ideal to be applied on exposed walls since if bumped by tools or machinery, it will not get damaged.

How Much Do Open Cell Foam and Closed Cell Foam Expand?

Both closed & open cell insulation types do come with varying expansion rates.

The open cell type has a higher expansion rate that can be 100 times over. Hence, homeowners prefer installing this type as it can easily get into crannies and nooks in rim joists, open wall cavities, crawl spaces, and attics.

But the closed-cell type exhibits a minimal expansion on the application since it is a much denser material. Although it comes with a lower expansion rate, it does manage to create a similar type of air barrier. Also, it offers amazing benefits.

What are the Blowing Agents for Closed Cell and Open Cell Spray Foams?

Both types of spray foams come with varying blowing agents.

Closed-cell type is known to us as a particular chemical agent. A few brands are found to emit temporary odors. Hence, you need to select a product that assures minimal off-gassing. This means it will emit less smell and hence, will be safe for you and your family members.

For blowing agents, the open-cell type uses water.

Both the cell types, be they closed or open, are acknowledged to be environment-friendly. They are equally safe to be installed at the home and Class-One Fire-rated!

Open Cell Spray Foam vs Closed Cell Cost

Several factors determine insulating the entire home. It includes size to be insulated, task difficulty, foam type used, and its thickness. It is found that closed-cell type costs more than open-cell type.

Which Type of Spray Foam Insulation Meets Your Needs?

Be it closed or open cell insulation; they both can develop an air seal, thus insulating the home. You need to understand the pros and cons of both and the purpose to install them. this will determine the type of spray foam invest in.