Originally posted on Modern Contractor Solutions Digital Magazine
Below-grade insulation is important for energy efficiency in both hot and cold climates.
Is insulation really needed on buried foundation walls and under concrete floor slabs? In short, “yes.”
Although below-grade insulation is out of sight, its benefits to a building’s energy efficiency can be “outtasight!” The key is to consider the insulation’s moisture and thermal performance, and to evaluate if a lower compressive resistance product will save you money while performing as needed. In addition to EPS’s demonstrated performance as below-grade insulation, the material’s moisture resistance and compressive strength also are confirmed by its use as geofoam in a range of building and heavy construction projects.
