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Insulation R Values: carpet
1831 to 1929
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) | material | mean temp (F) | r value per inch (ft2hF/BTU/in) | rsi per inch (m2K/W/in) | standard | test method | uncertainty |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| carpet | 1831 | 8/19/1971 | 23.21 | 1.0984 | 17.4 | Acrylic loop, jute back - 3 samples stacked | Woven | 0.5817 | Carpet | 130.71 | 0.247942 | 0.043665 | NIST SRD 81 API | ASTM C 177 | — |
| carpet | 1832 | 8/20/1971 | 23.57 | 1.2951 | 10.58 | Pad (only), rubberized hair-felt pad | Slab | 0.3521 | Carpet | 131.01 | 0.409622 | 0.072139 | NIST SRD 81 API | ASTM C 177 | — |
| carpet | 1874 | 7/18/1974 | 24.69 | 0.7933 | 7.534 | Carpet plus virgin urethane pad | Woven | 0.3254 | Carpet | 75.56 | 0.443233 | 0.078058 | NIST SRD 81 API | ASTM C 177 | — |
| carpet | 1875 | 7/19/1974 | 24.52 | 0.7922 | 7.545 | Carpet plus virgin urethane pad | Woven | 0.3254 | Carpet | 75.56 | 0.443233 | 0.078058 | NIST SRD 81 API | ASTM C 177 | 1 |
| carpet | 1876 | 7/22/1974 | 24.64 | 0.7635 | 6.096 | Carpet plus rebonded urethane pad | Woven | 0.3203 | Carpet | 75.6 | 0.45029 | 0.079301 | NIST SRD 81 API | ASTM C 177 | 1 |
| carpet | 1885 | 8/8/1974 | 24.48 | 0.6953 | 11.03 | Carpet plus rubber waffle pad | Woven | 0.4964 | Carpet | 75.03 | 0.290548 | 0.051168 | NIST SRD 81 API | ASTM C 177 | 1 |
| carpet | 1886 | 8/12/1974 | 24.51 | 0.6416 | 10.32 | Carpet plus jute-hair pad | Woven | 0.3555 | Carpet | 74.97 | 0.405704 | 0.071449 | NIST SRD 81 API | ASTM C 177 | 1 |
| carpet | 1887 | 8/19/1974 | 20.15 | 0.3774 | 20.03 | Carpet plus rubber waffle (one piece - bonded together) | Woven | 0.5551 | Carpet | 71.21 | 0.259823 | 0.045758 | NIST SRD 81 API | ASTM C 177 | 1 |
| carpet | 1889 | 10/17/1974 | 16.58 | 0.2717 | 21.88 | Nylon carpet (alone) | Woven | 0.5131 | Carpet | 68.53 | 0.281091 | 0.049503 | NIST SRD 81 API | ASTM C 177 | — |
| carpet | 1929 | 3/19/1976 | 24.52 | 0.6571 | 11.76 | Acrylic - plush, tufted (46 oz/yd<sup>2</sup>), jute backing | Woven | 0.422 | Carpet | 75.51 | 0.341772 | 0.06019 | NIST SRD 81 API | ASTM C 177 | — |
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