HD Composite

1/2″ High Density Polyiso Bonded to InsulFoam InsulFoam HD Composite “Hybrid” (InsulFoam HD Composite) is an engineered insulation consisting of a closed-cell, lightweight and resilient expanded polystyrene (EPS) bonded to high density polyisocyanurate cover board.


  • Mechanically fastened, ballasted or fully adhered EPDM, TPO or PVC
  • Low-sloped, built-up and modified bitumen membrane systems
  • Underlayment for metal roofing systems and some peel-and-stick systems