Alsan Foam EPS/XPS adhesive will save you time and money when installing polystyrene and polyurethane insulation boards. This low-expansion one-component polyurethane adhesive foam is specially designed to bond all types of polystyrene and polyurethane insulation materials to most construction materials. Compatible with polystyrene and urethane foams, including SOPRA-XPS and SOPRA-ISO. The foam adheres to most typical construction materials such as cement-based materials, brick, wood, aluminum and galvanized and painted iron sheets.