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Insulation R Values: vermiculite
745 to 997
Insulation R-values and thermal conductivity data from NIST SRD 81 — covers fiberglass, foam, cellulose, mineral wool, and other building insulation materials
| material id | record id | date | delta t (F) | delta x (in) | density (lb/ft3) | description | form | k w mk (W/mK) | manufacturer | material | mean temp (F) | r value per inch (ft2hF/BTU/in) | rsi per inch (m2K/W/in) | standard | test method | trade name |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| vermiculite | 745 | 5/22/1950 | 23.86 | 0.9758 | 5.843 | Aggregate - light, fluffy, 4 mm to 6 mm up to 12 mm placed in frames | Loose | 0.4732 | Southern Mineralite Company | Vermiculite | 70.59 | 0.304793 | 0.053677 | NIST SRD 81 API | ASTM C 177 | American Brand |
| vermiculite | 997 | 9/9/1955 | 24.07 | 1.0167 | 6.917 | Specimens placed in wood frames | Loose | 0.4864 | Zonolite Co. | Vermiculite | 72.06 | 0.296521 | 0.05222 | NIST SRD 81 API | ASTM C 177 | Zonolite® |
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