Expanded Polystyrene (EPS) and Extruded Polystyrene (XPS) are two materials that are commonly used for Insulation and Lightweight Fill applications. While they can be used interchangeably, there are performance and manufacturing differences between the two.  Identifying those differences can be challenging, especially with all the marketing that’s out there.  Arctic Roadways can help supply data that can shed light on the topics that are most interesting to you.  If the data you want does not exist, we may be able to help you get it (or some form of it), free of charge.