GPS (graphite polystyrene) is a rigid thermal insulation material. The primary difference between GPS and traditional insulation products is that GPS insulating boards are thinner. In fact, they are up to 20% thinner than other rigid insulation boards. That means less material is required to achieve the same results. And the product itself is recyclable, making it more environmentally friendly.
What is GPS Foam Made Of?
- Base Material: Expanded Polystyrene (EPS) beads
- Additive: Graphite particles (infused throughout the foam)
The graphite reflects and absorbs radiant heat, which significantly reduces thermal conductivity compared to standard white EPS. This gives GPS foams better R-values (thermal resistance) without increasing thickness. Achieving a higher R-value in a thinner product gives design professionals new options for exterior wall configurations. Walls can be made thinner with equal thermal resistance, creating a larger interior for a given building footprint. Or wall thickness can remain the same, and thermal resistance can be substantially increased.
