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Insulation R Values: nbs fibrous glass
1866 to 1913
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 | 1866 | 3/28/1974 | 22.82 | 0.9404 | 9.005 | Lot 1961 | Board | 0.2514 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 129.34 | 0.573699 | 0.101034 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1867 | 4/1/1974 | 21.09 | 0.937 | 9.054 | Lot 1961 | Board | 0.2001 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 3.29 | 0.720779 | 0.126937 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1880 | 7/29/1974 | 24.38 | 1.028 | 7.573 | Lot 1970 | Board | 0.2257 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 74.82 | 0.639025 | 0.112539 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1884 | 8/5/1974 | 24.43 | 1.0279 | 7.368 | Lot 1970 | Board | 0.2248 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.42 | 0.641583 | 0.112989 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1888 | 8/29/1974 | 24.48 | 0.4831 | 9.693 | Lot 1959, ½ in. | Board | 0.2328 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.3 | 0.619536 | 0.109107 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1910 | 5/10/1975 | 24.43 | 1.0251 | 7.745 | Lot (?) | Board | 0.2298 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.39 | 0.627624 | 0.110531 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1911 | 5/20/1975 | 23.42 | 0.9571 | 8.906 | Lot 1961 | Board | 0.2467 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 124.58 | 0.584629 | 0.102959 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1912 | 5/21/1975 | 24.31 | 0.9672 | 8.977 | Lot 1961 | Board | 0.2268 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.19 | 0.635925 | 0.111993 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1913 | 5/22/1975 | 21.62 | 0.9673 | 8.977 | Lot 1961 | Board | 0.1962 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 0.52 | 0.735107 | 0.12946 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
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