Rmax® Below Grade is an energy-efficient thermal insulation and protection board composed of a polyisocyanurate (polyiso) foam core bonded to reinforced polymeric facers on each side. Polyiso’s closed-cell and closed matrix foam core along with its durable facers create a multi-layered defense against water absorption and protection during backfill, making it a great choice for below-grade applications.

CONSTRUCTION APPLICATIONS

- Below-grade exterior walls
- Blind side walls
- Under slab
- Slab on grade