What’s the difference between Open Cell and Closed Cell?

Spray foam is the product of a chemical reaction. They are more commonly known as MDI and pMDI. These chemicals come separately. A special gun is used which combines both of these chemicals. They then react to form spray foam insulation.

There are two types of spray foam. Closed cell spray foam insulation and open cell spray foam insulation.

With open-cell spray foam the cells are not closed, as the name would suggest. This creates a softer, weaker spray foam. The space in the cells is filled with air.

Closed-cell spray foam is much stronger and has a higher R-value. The cells remain closed resulting in a rigid foam. Air is prohibited from entering the cells. This improves how well it works as insulation for your home or structure.

There are some similarities between the two, but they are also quite different.

The R-value of closed-cell spray foam insulation is quite a bit higher than open-cell spray foam. It resists water and adds strength and rigidity.

Open-cell spray foam insulation is not used when it's in direct contact with moisture. Open-cell spray foam insulation has a lower density than closed-cell spray foam insulation.

Open-cell spray foam insulation is used for sound proofing. The soft nature of the foam easily absorbs sound.

Closed cell spray foam insulation
Closed cell spray foam insulation

Our professionally trained team can examine your structure, calculate a price and install our elite spray foam insulation in a matter of weeks.

The products we use are PurAcell approved which means you are guaranteed excellence. These products have been tested and approved by the National Safety Authority of Ireland. You can see the certificate here.

Our services can cater to domestic, commercial and industrial needs. Spray foam insulation is an excellent choice. We are available for jobs of all shapes and sizes. You can find our contact form here.

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