Zero thermal drift. Zero compromise.
- GPS (graphite polystyrene) provides R-5 per nominal inch*
- GPS provides a permanent long-term R-value and won’t deteriorate over time like XPS and ISO.
- GPS delivers greater R-values at lower outside temperatures.
- Minimizes the energy loss from thermal bridging
- Light yet durable — perfect for today’s demanding jobsites.
- Superior indoor air quality due to Halo®’s clean steam-fused GPS core.
- GPS is 100% recyclable and ozone layer-friendly — no CFCs or HCFCs.
*Thermal performance claim based on thickness of 1 1/16”.