Open Cell vs Closed Cell Foam Insulation: Which to Choose?

Understanding the Difference

Foam insulation comes in two main types: open-cell foam and closed-cell foam. While both provide insulation and air sealing, their different cell structures give them unique properties that make them better suited for different applications.

Open-Cell Foam

Open-cell foam has cells that are open and connected, allowing air to move through the material. This creates a softer, more flexible foam that is excellent for sound absorption and filling large spaces.

Lightweight

Breathable Structure

Flexible

Closed-Cell Foam

Closed-cell foam has cells that are completely sealed, trapping gas inside each cell. This creates a denser, stronger foam with superior insulation and moisture resistance.

Dense and Rigid

Vapor Barrier

Adds Structural Support

Which Foam Is Right for Your Project?

Choose open-cell foam if you need:

✓ Affordable insulation
✓ Sound reduction
✓ Flexible coverage for large areas

Choose closed-cell foam if you need:

✓ Maximum insulation performance
✓ Moisture protection
✓ Added durability and strength

Not sure which option is right for you? We can help you select the best foam solution for your needs.