Foam Plastic Insulating Sheathing (FPIS) Products are offered in three types:
- Expanded Polystyrene (EPS) - ASTM C578
- Extruded Polystyrene (XPS) - ASTM C578
- Polyisocyanurate (Polyiso) - ASTM C1289
FPIS products come in many thicknesses to accommodate almost any end use and can be used along with approved tapes as part of a WRB system. Learn proper installation techniques and download an installation checklist using the links below.
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Step-by-Step Installation Instructions & Safety Information [PDF]
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Installer and Building Inspector Installation Checklist [XLSX]
Related Resources: