Insulation R Values: cellular_polystyrene
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) | form | k w mk (W/mK) | material | mean temp (F) | r value per inch (ft2hF/BTU/in) | rsi per inch (m2K/W/in) | test method |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| cellular_polystyrene | 1208 | 5/31/1960 | 25.62 | 0.9945 | 1.578 | Board | 0.242 | Cellular Polystyrene | 74.82 | 0.595983 | 0.104959 | ASTM C 177 |
| cellular_polystyrene | 1209 | 6/1/1960 | 22.91 | 0.9954 | 1.579 | Board | 0.2706 | Cellular Polystyrene | 129.95 | 0.532993 | 0.093865 | ASTM C 177 |
| cellular_polystyrene | 1926 | 12/18/1975 | 24.53 | 0.7036 | 1.012 | Board | 0.2703 | Cellular Polystyrene | 75.38 | 0.533585 | 0.09397 | ASTM C 177 |
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