Closed Cell vs Open Cell Spray Foam
Yakima Spray Foam Pros installs professional open-cell and closed-cell spray foam insulation in Yakima and nearby areas. Both foam types can insulate and air seal, but they behave differently once installed, so the right choice depends on the building assembly, moisture conditions, available depth, and performance goal.
Closed-cell spray foam
Closed-cell foam is denser and more rigid. It is often used when a project needs strong air sealing, moisture resistance, higher insulation value in limited space, or added durability in areas like crawl spaces, rim joists, shops, metal buildings, commercial assemblies, and exterior wall cavities.
Open-cell spray foam
Open-cell foam is lighter and softer. It can be useful in interior areas where sound control, full cavity fill, and air sealing are priorities. It generally expands more than closed-cell foam, but it does not provide the same density, R-value per inch, or moisture resistance.
Which one should you use?
The right choice depends on the area being insulated, the amount of space available, moisture exposure, code requirements, and the result you want. We review the project location, building type, access, and assembly details before recommending a foam type.