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Insulation R Values: plywood
647 to 658
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) | material | mean temp (F) | r value per inch (ft2hF/BTU/in) | rsi per inch (m2K/W/in) | standard | test method |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| plywood | 647 | 12/7/1948 | 23.2 | 1.2833 | — | Two 5/8 in. samples glued together (79 % RH) | Board | 0.9087 | Plywood | 70.45 | 0.158719 | 0.027952 | NIST SRD 81 API | ASTM C 177 |
| plywood | 649 | 12/9/1948 | 24.05 | 1.283 | — | Two 5/8 in. samples glued together (79 % RH) | Board | 0.8743 | Plywood | 39.43 | 0.164964 | 0.029052 | NIST SRD 81 API | ASTM C 177 |
| plywood | 652 | 1/3/1949 | 23.28 | 1.2855 | 34.8 | Two 5/8 in. samples glued together (79 % RH) | Board | 0.8947 | Plywood | 54.21 | 0.161203 | 0.028389 | NIST SRD 81 API | ASTM C 177 |
| plywood | 658 | 1/17/1949 | 23.65 | 1.2558 | 34.8 | Two 5/8 in. samples glued together, sanded, aluminum painted | Board | 0.7892 | Plywood | 70.98 | 0.182752 | 0.032184 | NIST SRD 81 API | ASTM C 177 |
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