Closed-cell polyurethane spray foam has some pretty awesome qualities. It has a high R-value. Its resistant to water, mold and insects. It expands into hard-to-reach nooks and crannies. Heck, it ...

After weighing the benefits of spray ... walls, is permeable to vapor and air, and will lower noise frequency ranges. So if you are looking for a strong insulation, a closed-cell spray foam ...