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Insulation R Values: wood
1915 to 861
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| wood | 1915 | 5/28/1975 | 11.51 | 0.5357 | 49.65 | from Canada | Board | 0.9597 | Wood | 78.16 | 0.150284 | 0.026467 | NIST SRD 81 API | ASTM C 177 |
| wood | 372 | 5/22/1944 | 20.07 | 1 | 5.85 | Balsa, lightweight | Board | 0.3215 | Wood | 95.98 | 0.448609 | 0.079005 | NIST SRD 81 API | — |
| wood | 373 | 5/23/1944 | 20.87 | 0.7425 | 9.99 | Balsa, medium-weight | Board | 0.4141 | Wood | 96.67 | 0.348292 | 0.061338 | NIST SRD 81 API | — |
| wood | 856 | 11/13/1952 | 24 | 0.5156 | 21.62 | White pine | Board | 0.6021 | Wood | 72.54 | 0.239541 | 0.042186 | NIST SRD 81 API | ASTM C 177 |
| wood | 858 | 11/17/1952 | 20.29 | 0.5075 | 31.18 | Mahogany | Board | 0.7855 | Wood | 69.31 | 0.183613 | 0.032336 | NIST SRD 81 API | ASTM C 177 |
| wood | 860 | 11/19/1952 | 22.31 | 0.515 | 21.6 | White pine | Board | 0.6319 | Wood | 128.97 | 0.228245 | 0.040196 | NIST SRD 81 API | ASTM C 177 |
| wood | 861 | 11/22/1952 | 19.05 | 0.5032 | 31.1 | Mahogany | Board | 0.8267 | Wood | 126.17 | 0.174462 | 0.030725 | NIST SRD 81 API | ASTM C 177 |
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