As per the standard the following materials can be used for insulation:
- Cellulose (blown-in) loose-fill insulation meeting ASTM C739, 16 CFR 1209, 1404,
- Specific Cellulose ICC ES reports required for fire-rated details (e.g., ESR-1996 US Green fiber, ESR-2217 Nu-Wool)
- Mineral fiber Bart and blanket insulation meeting ASTM 665,
- Mineral fiber (blown-in) loose-fill insulation meeting ASTM C764,
- Fiberglass wool engineered for resisting airflow to less than 3.5cfm/sq ft @50pa and tested to ASTM C522 (e.g., JM Spider, Knauf Perimeter Plus)
- Rigid closed cell foam boards meeting ASTM C578, ICC ES AC12,
- Specific foam board ICC ES reports required for uncovered use (e.g., NER-681 Thermax,
Rigid Fiberglass faced insulation boards meeting ASTM C553, C612, and C 1136 for facing.