Extruded polystyrene (XPS) is a high-quality heat insulating material used in high load and moist conditions. The method of extrusion was created 60 years ago in the USA.

Because of the closed cell structure of the initial stock which prevents water from penetration, XPS boards show excellent performance characteristics: 

-         low thermal conductivity
-         high endurance
-         neutral capillarity
-         high moisture resistance
-         freeze-thaw durability
-         high vapor diffusion resistance
-         light weight and easy workability
-         chemical inertness
-         ecological friendliness