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Insulation R Values: nbs fibrous glass
1916 to 1936
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 | uncertainty |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| nbs fibrous glass | 1916 | 7/16/1975 | 24.25 | 0.9484 | 8.954 | Lot 1961 | Board | 0.2284 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.35 | 0.631471 | 0.111208 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | — |
| nbs fibrous glass | 1917 | 7/17/1975 | 24.79 | 0.9369 | 7.876 | Lot 1961 | Board | 0.2259 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.83 | 0.638459 | 0.112439 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | — |
| nbs fibrous glass | 1918 | 7/21/1975 | 24.46 | 0.938 | 9.211 | Lot 1961 | Board | 0.2316 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.53 | 0.622746 | 0.109672 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | — |
| nbs fibrous glass | 1919 | 7/22/1975 | 24.49 | 0.9373 | 7.855 | Lot 1961 | Board | 0.2239 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.46 | 0.644162 | 0.113444 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | — |
| nbs fibrous glass | 1920 | 7/24/1975 | 24.49 | 1.018 | 7.686 | Lot 1970 | Board | 0.2279 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.66 | 0.632856 | 0.111452 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | — |
| nbs fibrous glass | 1928 | 3/11/1976 | 24.53 | 1.0231 | 7.632 | Lot 1970 | Board | 0.2257 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.41 | 0.639025 | 0.112539 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1933 | 5/24/1976 | 24.43 | 0.9635 | 8.979 | Lot 1961 | Board | 0.2273 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.28 | 0.634527 | 0.111747 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1934 | 5/26/1976 | 24.66 | 1.0279 | 7.67 | Lot 1970 | Board | 0.228 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.54 | 0.632579 | 0.111404 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | — |
| nbs fibrous glass | 1935 | 6/8/1976 | 24.47 | 0.942 | 8.732 | Lot 1961 | Board | 0.2291 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.48 | 0.629541 | 0.110869 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1936 | 6/9/1976 | 22.89 | 0.9463 | 8.693 | Lot 1961 | Board | 0.2513 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 128.07 | 0.573927 | 0.101074 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
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