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Spray Foam Science - Open- vs. Closed Cell Foam Insulation

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Spray Foam Science - Open- vs. Closed Cell Foam Insulation

So you’ve chosen to install spray foam insulation like Icynene in your home! It’s important to have a basic handle on the different types available, and what they’re best used for, in order to choose the right kind for your project. There are two main options available for residential foam insulation: open cell and closed cell spray foam insulation.

Open cell spray foam insulation is also known as low density spray foam. The open cell structure gives this foam insulation a sponge-like, flexible texture even after curing that helps it retain its insulation properties year round. It is often used for building construction because it is ideal for filling in gaps in walls, and it is an air barrier that helps reduce the amount of air escaping from your home.

And while both types of spray foam offer excellent thermal and air sealing performance,  open cell is particularly good at helping to dampen sounds. It also offers moisture permeability, to allow any leak issues to be identified quickly.
On the other hand, closed cell foam insulation is a medium density spray foam. It has a higher insulation R value per inch than open cell foam, and is rigid. This makes it an ideal option for use in small areas, where there is less space but still the same level of insulation needed such as crawlspaces. It is also better at resisting water, and so is ideal for use in environments that are more humid or experience lots of rain or prone to flooding

Do you know which type of spray foam insulation is right for you? Contact a licensed Icynene spray foam insulation contractor in your area, to find out more.


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