SecurShield HD Composite is a continuous above-deck insulation for use on combustible decks. The product consists of a closed-cell, lightweight, resilient expanded-polystyrene (EPS), bonded to a high-density polyisocyanurate cover board. It achieves a UL Class A rating on a combustible deck without gypsum or any other coverboard and, since it is continuous above the deck, it satisfies Title 24 requirements at a lower R value than batt insulation. The lightweight, factory-bonded panels are said to be easy to install and compatible with all fully adhered or mechanically fastened EPDM, TPO, and PVC membranes. The insulation meets or exceeds ASTM C578 requirements.
Carlisle SynTec, Carlisle, PA