Apply Closed-Cell Spray Foam Insulation (for comparison)

What happens here

Finally, apply closed-cell spray foam insulation into the last wall cavity using a portable spray foam kit. This type of insulation expands and cures to create an airtight, vapor-resistant barrier with a high R-value. The presenter suggests a 2-3 inch thickness which will expand, creating a solid foam layer. The material's fire resistance will be evaluated during the testing phase.

Goal: Apply closed-cell spray foam insulation into a wall cavity.