R-Tech Fanfold Recover Board is a high-performance, 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. The EPS core of R-Tech Fanfold Recover Board, Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation. R-Tech Fanfold Recover Board has excellent dimensional stability, compressive strength and water-resistant properties.