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Insulation R Values: nbs fibrous glass
2013 to 2039
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 | 2013 | 3/16/1979 | 24.36 | 1.0416 | — | Lot 1958 | Board | 0.2184 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.33 | 0.660384 | 0.1163 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | — |
| nbs fibrous glass | 2023 | 5/21/1979 | 24.26 | 1.0477 | 7.477 | Lot (?) | Board | 0.2282 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.05 | 0.632024 | 0.111306 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | — |
| nbs fibrous glass | 2024 | 5/22/1979 | 23.69 | 1.051 | 7.454 | Lot (?) | Board | 0.2389 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 102.53 | 0.603717 | 0.106321 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | — |
| nbs fibrous glass | 2025 | 5/23/1979 | 25.64 | 1.0511 | 7.453 | Lot (?) | Board | 0.2133 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 38.48 | 0.676174 | 0.119081 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | — |
| nbs fibrous glass | 2026 | 5/24/1979 | 24.88 | 0.9637 | 8.079 | Lot (?), return for check | Board | 0.2267 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.56 | 0.636206 | 0.112042 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | — |
| nbs fibrous glass | 2028 | 5/29/1979 | 24.54 | 0.5325 | 7.599 | Lot 1959, ½ in. | Board | 0.2264 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.35 | 0.637049 | 0.112191 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 2029 | 6/4/1979 | 23.09 | 0.5309 | 7.622 | Lot 1959, ½ in. | Board | 0.2467 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 125.07 | 0.584629 | 0.102959 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 2030 | 6/6/1979 | 25.76 | 0.5306 | 7.626 | Lot 1959, ½ in. | Board | 0.208 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 30.73 | 0.693403 | 0.122115 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | 1 |
| nbs fibrous glass | 2038 | 7/10/1979 | 24.22 | 0.961 | 9.045 | Lot 1961, return for check | Board | 0.2323 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.09 | 0.620869 | 0.109341 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | — |
| nbs fibrous glass | 2039 | 7/20/1979 | 24.61 | 0.9643 | 8.42 | Lot 1961, internal check standard (A,B), 1 in. | Board | 0.2262 | Owens Corning Fiberglas Corp. | NBS Fibrous Glass | 75.41 | 0.637612 | 0.11229 | NIST SRD 81 API | ASTM C 177 | SRM® 1450 Series | — |
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