Fox Blocks recommends that all installers using Fox Blocks ICFs complete a Fox Blocks training program to ensure they have a better understanding of the basics. However, for first time installers, it is preferred that a Fox Blocks trained, experienced installer inspect the installation prior to placement of concrete and assist in the placement of the concrete, as they are familiar with working with concrete and can ensure the build is structurally sound and safe and the walls are consolidated properly, built straight and plumb.