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| Term | Description |
|---|---|
| Phenolic foam | A closed-cell, rigid, thermosetting foam insulation product with an orange or light-red foam core. Facer materials include corrugated cellulose, aluminum foil and fiberglass mat. See "insulation." Phenolic foam roof insulation can contribute to corrosion of steel roof decks because of leaching out of acidic compounds that takes place when the phenolic foam roof insulation contacts moisture. |