Rmax® Below Grade
Insulation for Exterior Wall & Foundation Use

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 an excellent choice for below-grade applications.

 

CONSTRUCTION APPLICATIONS

  • Below grade exterior walls

  • Blindside walls

  • Under slab

  • Slab on grade

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