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Insulation R Values: fiberboard
183 to 67
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| fiberboard | 183 | 6/12/1940 | — | 0.75 | 19.7 | Fiber(?) sheathing board, asphalt, aluminum paint | Board | 0.403 | — | Fiberboard | 91.4 | 0.357886 | 0.063027 | NIST SRD 81 API | — | — |
| fiberboard | 184 | 6/18/1940 | — | 0.79 | 16.7 | Fiber(?) sheathing board, asphalt | Board | 0.399 | — | Fiberboard | 92.5 | 0.361473 | 0.063659 | NIST SRD 81 API | — | — |
| fiberboard | 185 | 6/20/1940 | — | 0.772 | 16.3 | Fiber(?) sheathing board, asphalt, aluminum paint | Board | 0.37 | — | Fiberboard | 92.9 | 0.389805 | 0.068649 | NIST SRD 81 API | — | — |
| fiberboard | 1896 | 11/13/1974 | 24 | 0.5156 | 19.4 | Mobile home ceiling board, ½ in. | Board | 0.4151 | — | Fiberboard | 74.88 | 0.347453 | 0.06119 | NIST SRD 81 API | ASTM C 177 | — |
| fiberboard | 219 | 10/25/1940 | — | 0.479 | 16.9 | ½ in. | Board | 0.372 | — | Fiberboard | 90.7 | 0.387709 | 0.06828 | NIST SRD 81 API | — | — |
| fiberboard | 478 | 12/30/1946 | 18.51 | 0.4741 | 17.66 | LLL-F-321b, grade A, ½ in. | Board | 0.3639 | United Refrig. Mfg. Co. | Fiberboard | 71.68 | 0.396339 | 0.069799 | NIST SRD 81 API | ASTM C 177 | — |
| fiberboard | 51 | 5/12/1936 | — | — | 26 | Probably newsprint and vegetable fibers | Board | 0.45 | Agasote Millboard Co. | Fiberboard | 75 | 0.320506 | 0.056444 | NIST SRD 81 API | — | Homosote |
| fiberboard | 64 | 9/14/1938 | — | 0.509 | 16.3 | ½ in. | Board | 0.36 | — | Fiberboard | 75 | 0.400633 | 0.070556 | NIST SRD 81 API | — | — |
| fiberboard | 65 | 9/14/1938 | — | 0.502 | 15.4 | ½ in. | Board | 0.33 | — | Fiberboard | 75 | 0.437054 | 0.07697 | NIST SRD 81 API | — | — |
| fiberboard | 67 | 8/25/1938 | — | 0.53 | 16.4 | Fiberboard (?), ½ in. | Board | 0.35 | — | Fiberboard | 75 | 0.41208 | 0.072571 | NIST SRD 81 API | — | — |
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