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Insulation R Values: nbs fibrous glass
1967 to 1981
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 | 1967 | 10/20/1977 | 24.07 | 0.957 | 9.468 | Lot 1961 | Board | 0.2334 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.05 | 0.617943 | 0.108826 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1968 | 11/29/1977 | 23.99 | 1.0208 | 7.418 | Lot 1970 | Board | 0.2245 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.16 | 0.642441 | 0.11314 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1969 | 12/6/1977 | 24.05 | 1.0273 | 7.89 | Lot 1970 | Board | 0.2279 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.03 | 0.632856 | 0.111452 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1970 | 12/8/1977 | 22.78 | 1.0263 | 7.898 | Lot 1970 | Board | 0.2478 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 127.13 | 0.582033 | 0.102502 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1971 | 12/14/1977 | 23.01 | 1.0265 | 7.896 | Lot 1970 | Board | 0.1968 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | -0.18 | 0.732865 | 0.129065 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1972 | 12/20/1977 | 24.65 | 1.0325 | 8.005 | Lot 1970 | Board | 0.2265 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.56 | 0.636768 | 0.112141 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1973 | 12/21/1977 | 24.38 | 1.0283 | 8.041 | Lot 1970 | Board | 0.2277 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 74.94 | 0.633412 | 0.11155 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1974 | 12/22/1977 | 24.17 | 1.0288 | 7.859 | Lot 1970 | Board | 0.2269 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.13 | 0.635645 | 0.111944 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 1980 | 2/23/1978 | 23.78 | 0.9443 | 9.219 | Lot (?) | Board | 0.2316 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 74.55 | 0.622746 | 0.109672 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
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