SOPRA-ISO HD is a high density rigid polyisocyanurate panel designed for use as a cover board in approved multi-ply membrane and flashing assemblies. SOPRA-ISO HD is composed of closed cell polyisocyanurate foam bonded to inorganic coated glass mat facers on the top and underside.

Product Properties

  • Material Polyisocyanurate
  • Use Coverboard


Prior to installation, ensure all SOPRA-ISO HD panels have not been subject to moisture. Place SOPRA-ISO HD in an offset or staggered pattern to ensure board joints are not overlapping in multilayer assemblies. Apply to approved substrate via DUOTACK 365 adhesive or hot asphalt following manufacturer specifications. SOPRA-ISO HD may also be mechanically fastened to approved substrates. Refer to the SOPREMA SBS Roofing Manual for additional application guidelines.

Testing & Approvals

FBC FL2569-R8 (Underlayments) FM Miami-Dade UL

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