Types of Spray Foam
Closed Cell & Open Cell

Closed-cell spray foam is stronger than open-cell and can be used in applications where durability is important (such as in walls). 

Spray foam is a type of polymer material that is widely used in construction and insulation applications. It is made by combining two chemicals, polyol resin and isocyanate, which react and expand upon contact with the surface they are applied to. The resulting foam is used to fill gaps, insulate buildings, and create airtight seals.

There are two main types of spray foam: open-cell and closed-cell.

Each has its own unique properties and is used in different applications.

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Closed-cell spray foam is denser and stronger than open-cell foam. It is often used in applications where durability is important, such as in walls, roofs, and floors. Closed-cell foam also has thicker insulation properties than open-cell foam, which makes it more effective at preventing heat transfer. This property allows it to perform better at higher temperatures than open-cell foam.

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Closed-cell foam hardens as it dries, which makes it an effective barrier against air infiltration. The foam fills gaps and crevices and hardens into a solid mass, effectively blocking any air that tries to penetrate it. This makes it an excellent choice for insulation applications where air infiltration is a concern.

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On the other hand, open-cell spray foam is softer and more flexible than closed-cell foam. It is often used in soundproofing and insulation applications where its ability to absorb sound and fill gaps is useful. Open-cell foam is also more permeable to water vapor than closed-cell foam, which can be useful in applications where moisture control is necessary.

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Open-cell foam is easier to apply than closed-cell foam, as it requires no special equipment or training. It is also less expensive than closed-cell foam, making it a more affordable option for some applications. Additionally, open-cell foam protects against moisture and air infiltration better than closed-cell foam, which means that it can be used in a wider range of applications.

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However, there are some disadvantages to using open-cell foam. It may absorb less shock than closed-cell foams, which can make it less effective in some applications. Additionally, open-cell foam is less dense than closed-cell foam, which means that it may not provide as much structural support.

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One of the primary differences between open-cell and closed-cell foam is their breathability. Open-cell foam is more breathable than closed-cell foam, which means that it allows air and moisture to pass through it. This property can be useful in some applications, such as in roofing systems where ventilation is necessary to prevent moisture buildup.

Closed-cell foam, on the other hand, is less breathable than open-cell foam, which means that it provides a more effective barrier against air and moisture infiltration.

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When selecting a type of spray foam, it is important to consider the specific requirements of the application. Factors such as durability, insulation properties, and breathability should all be taken into account. It is also important to consider the cost of the foam, as well as the ease of installation and any special equipment or training that may be required.

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Open-cell and closed-cell spray foam are both useful materials with unique properties. Closed-cell foam is denser and stronger, making it more effective at blocking air infiltration and providing structural support. Open-cell foam is softer and more flexible, making it useful for soundproofing and insulation applications.

When selecting a type of foam, it is important to consider the specific requirements of the application and choose the foam that best meets those needs.

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