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Insulation R Values: corkboard
196 to 444
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| corkboard | 196 | 7/16/1940 | — | 0.95 | 9.5 | 1 in. | Board | 0.295 | — | Corkboard | 95.5 | 0.488908 | 0.086102 | NIST SRD 81 API | — |
| corkboard | 231 | 2/7/1941 | — | 0.95 | — | Brazil cork, specimen in very poor condition | Board | 0.331 | Brazil | Corkboard | 78.1 | 0.435734 | 0.076737 | NIST SRD 81 API | — |
| corkboard | 234 | 2/17/1941 | — | 1 | 7.4 | — | Board | 0.281 | — | Corkboard | 78.4 | 0.513267 | 0.090391 | NIST SRD 81 API | — |
| corkboard | 241 | 2/28/1941 | — | 1 | 7.4 | — | Board | 0.281 | — | Corkboard | 78.4 | 0.513267 | 0.090391 | NIST SRD 81 API | — |
| corkboard | 246 | 4/30/1941 | — | 1 | 7.8 | — | Board | 0.29 | — | Corkboard | 90.1 | 0.497338 | 0.087586 | NIST SRD 81 API | — |
| corkboard | 281 | 3/13/1942 | 9.83 | 0.4985 | 18.4 | Cork conductimeters, ½ in. | Board | 0.3078 | Armstrong Cork Co. | Corkboard | 73.82 | 0.468577 | 0.082521 | NIST SRD 81 API | — |
| corkboard | 282 | 3/16/1942 | 28.87 | 0.4985 | 18.4 | Cork conductimeters, ½ in. | Board | 0.314 | Armstrong Cork Co. | Corkboard | 90.85 | 0.459325 | 0.080892 | NIST SRD 81 API | — |
| corkboard | 30 | 11/10/1933 | — | 1.003 | 12.2 | — | Board | 0.317 | — | Corkboard | 92.6 | 0.454978 | 0.080126 | NIST SRD 81 API | — |
| corkboard | 319 | 3/15/1943 | 11.93 | 0.582 | 7.4 | ½ in. | Board | 0.2813 | — | Corkboard | 72.83 | 0.512719 | 0.090295 | NIST SRD 81 API | — |
| corkboard | 444 | 4/10/1946 | 23.31 | 1.002 | 13.27 | Dense corkboard, possible calibration material, 1 in. | Board | 0.3196 | Armstrong Cork Co. | Corkboard | 88.42 | 0.451276 | 0.079474 | NIST SRD 81 API | ASTM C 177 |
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