CONCRETE... It's not just for basements anymore!! Beautiful homes are being built using concrete for all exterior walls. You can now build all the exterior walls of your home with concrete using the Rhino Block ICF. Insulating Concrete Form construction produces homes of OUTSTANDING quality with none of the disadvantages of traditional construction. The outside of your home can be finished with all types of exteriors including; stucco, brick, aluminum and wood. The interior of your ICF home is finished with sheetrock and painted just like traditional construction.