EPS is a closed cell, light-weight, resilient, foamed plastic composed of hydrogen and carbon atoms. EPS has a compressive strength between 10-60 psi for most construction applications. Within that range EPS can be molded to meet specific application requirements. Applied in foundations, walls and roofs, EPS has a successful history of efficient use in industrial, commercial, cold storage and residential buildings. Where energy efficiency and cost effectiveness have long been primary design considerations, architects have made EPS the dominant thermal insulation.