![Spray foam and rigid foam were used under the slab while rigid foam wraps the exterior of the foundation walls. | Building America Solution Center Spray foam and rigid foam were used under the slab while rigid foam wraps the exterior of the foundation walls. | Building America Solution Center](https://basc.pnnl.gov/sites/default/files/images/2018-ReviveMulti-5-FoamInsulation.jpg)
Spray foam and rigid foam were used under the slab while rigid foam wraps the exterior of the foundation walls. | Building America Solution Center
Spray foam under a concrete slab is the best way to insulate the floor and it also eliminates any radon that may have otherwise seeped in from the... | By Empire Insulation
![I wanted to cry': Devastating risks of spray foam insulation hidden from Vermont homeowners - VTDigger I wanted to cry': Devastating risks of spray foam insulation hidden from Vermont homeowners - VTDigger](https://i0.wp.com/vtdigger.org/wp-content/uploads/2023/05/Vermont-Spray-Foam-Insulation-4.jpeg?fit=2000%2C1333&ssl=1)