Tri-State Builders has poured some of the most elaborate foundations using Insulated Concrete Forms. ICFs are concrete forms made up of a foam-like material, Expanded Polystyrene.  The “foam” panels are then mated using a “plastic” web.  The webs also help to ensure that the steel rebar spacing is precise, and accurate.  Once stacked upon each other, ICFs much resemble traditional concrete forms.