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Insulation R Values: nbs fibrous glass
1947 to 1966
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 | 1947 | 4/21/1977 | 22.96 | 1.017 | 7.614 | Lot (?) | Board | 0.2519 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 129.07 | 0.57256 | 0.100834 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1948 | 4/22/1977 | 22.22 | 1.0193 | 7.597 | Lot (?) | Board | 0.2002 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 0.74 | 0.720419 | 0.126873 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1949 | 5/19/1977 | 24.32 | 0.4727 | 9.97 | Lot 1959, ½ in. | Board | 0.2364 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 77.39 | 0.610101 | 0.107445 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1950 | 5/23/1977 | 22.95 | 0.4699 | 10.03 | Lot 1959, ½ in. | Board | 0.2556 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 125.7 | 0.564272 | 0.099374 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1951 | 6/15/1977 | 24.08 | 0.9496 | 8.2 | Lot (?) | Board | 0.2313 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 74.94 | 0.623553 | 0.109814 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1953 | 7/13/1977 | 24.4 | 1.024 | 7.685 | Lot 1970 | Board | 0.2252 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.24 | 0.640444 | 0.112789 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1964 | 9/9/1977 | 24.37 | 1.0517 | 7.571 | Lot 1970 | Board | 0.2258 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.44 | 0.638742 | 0.112489 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1965 | 10/18/1977 | 24.28 | 1.0223 | 7.892 | Lot 1970 | Board | 0.2294 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.24 | 0.628718 | 0.110724 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1966 | 10/19/1977 | 24.29 | 1.0243 | 7.658 | Lot 1970 | Board | 0.2276 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.3 | 0.63369 | 0.111599 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
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