Insulating concrete forms (ICFs) are hollow “blocks” or “panels” made of expanded polystyrene insulation (EPS) or other insulating foam used to permanently form concrete structures. ICFs result in cast-in-place concrete walls that are sandwiched between two layers of EPS foam material, providing insulation for the structure they enclose. This combination creates a wall with many desirable properties: strength, insulation, and noise control.
