R-Tech® is an engineered rigid insulation consisting of a superior closed-cell, lightweight and resilient expanded polystyrene (EPS) with advanced polymeric laminate facers. R-Tech is available with factory adhered metallic-reflective facers, white facers or a combination of the two. R-Tech is the same high-quality as our InsulFoam brand insulations and meets or exceeds the comprehensive strength, flexural strength, dimensional stability and water absorption requirements Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation. In addition, R-Tech has excellent dimensional stability, compressive strength and water resistance properties.