Spray foam insulation was utilized for the project, which entailed the application of SPF to the interior and exterior of a man-made 2,000 sq. ft. structure consisting of specialized mesh held in place by chicken wire. The structure also included a concrete wall in the center of the mesh structure, which was made to look like a mountain after the foam was applied. The mountain was fused to the cave and towered over the entire structure.

Before the spray foam crew arrived, the structure was preassembled for the foam application. Holes were carved out of the specialized fabric to serve as windows for the cave. Two large openings from one end of the cave layout offered optimal ventilation throughout the job. The crew applied a two lb. closed-cell spray polyurethane foam to the interior walls and roof and the structure’s exterior, including the cement wall. The application varied from two to six inches of foam sprayed over every substrate on the structure. The spray foam worked exceptionally well for this type of design, and we are seeing more and more of these cave-type projects in which developers are finding spray foam to be the most suitable product for the job.