Sto's Expanded Polystyrene (EPS) Insulation Boards are intended for use in Sto CI Wall Systems. Due to its high resiliency and compressive resistance, Sto's EPS panels are an excellent choice for the repetitive loading of roof insulation (walkability), sub-pavement flooring, road building, and as a general load-bearing insulation. With its flexible production process, the mechanical properties of EPS can be adjusted to suit every specified application.