What Is GPS? Graphite Polystyrene (GPS) is a type of polystyrene foam insulation and is the insulation material that forms the core of Halo’s Interra®, Exterra®, and Subterra® panels. GPS is basically Expanded Polystyrene (EPS) which is infused with graphite particles. These graphite particles reflect radiant heat as it moves through the insulation, thus slowing down heat transfer considerably. […]
Wondering whether Type 1 GPS or Type 2 Polyiso is the better fit for your next project? Check out this side-by-side comparison between Type 1 Graphite Polystyrene (GPS), and Type 2 Polyiso (Polyisocyanurate).