These insulating concrete forms (ICFs) are ideal for sustainable construction. Along with high energy efficiency and safety, these ICFs are a 5-in-1 wall assembly, combining five trades into one system: steel reinforced concrete, insulated panels with 21/2-in. EPS achieving an R-Value of 22, air barrier wall with a PERM rating of 0.2–0.3, and six attachment furring strips per form. Reward Wall Systems. 800-468-6344.