STYRO-FLEX expanded polystyrene (EPS) roof insulation is compatible with all major roofing materials and systems, making it ideal for use in ballasted, mechanically fastened and fully-adhered roof assemblies, and under both membrane and built-up coverings. STYRO-FLEX EPS provides permanent high R-Values, superior dimensional stability and documented resistance to moisture absorption and physical degradation. Available in flat, tapered and compound tapered panels, STYRO-FLEX EPS roof insulation offers unparalleled cost-effectiveness and design flexibility. With a long history of proven performance, STYRO-FLEX EPS provides building owners, architectural specifiers and contractors the confidence that comes from its successful application in millions of square feet of high-performance roof systems.