Abstracted from ASHRAE (1989), with permission
Building BoardDescription | Density |
Conductivity |
Gypsum or plasterboard, 0.5 in | 800 |
0.160 |
Plywood (Douglas fir) | 545 |
0.115 |
Hardboard, Medium-density | 800 |
0.105 |
Hardboard, High-density, service temp. service underlay | 880 |
0.118 |
Hardboard, High-density. standard tempered | 1010 |
0.144 |
Particleboard, Low-density | 593 |
0.078 |
Particleboard, Medium-density | 800 |
0.135 |
Particleboard, High-density | 1000 |
0.170 |
Description | Density |
Conductivity |
Cellular glass | 136 |
0.050 |
Glass fiber, organic bonded | 64 to 144 |
0.036 |
Expanded perlite, organic bonded | 16 |
0.052 |
Expanded rubber (rigid) | 72 |
0.032 |
Expanded polystyrene extruded, Cut cell surface | 29 |
0.036 |
Expanded polystyrene extruded, Smooth skin surface | 29 to 56 |
0.029 |
Expanded polystyrene, molded beads | 16 |
0.029 |
20 |
0.036 |
|
24 |
0.035 |
|
28 |
0.035 |
|
32 |
0.033 |
|
Cellular polyurethane (R11 exp.)(unfaced) | 24 |
0.023 |
Polyisocynaurate (R11 exp.) | 32 |
0.020 |
Mineral fiber with resin binder | 240 |
0.042 |
Mineral fiberboard, wet-felted, Core or roof insulation | 256 to 272 |
0.049 |
Mineral fiberboard, wet-felted, Acoustical tile | 288 |
0.050 |
Description | Density |
Conductivity |
Cellulosic insulation (milled paper or wood pulp) | 37 to 51 |
0.039 to 0.046 |
Sawdust or shavings | 128 to 240 |
0.065 |
Wood fiber, softwoods | 32 to 56 |
0.043 |
Perlite, expanded | 80 to 128 |
0.053 |
Vermiculite, exfoliated | 112 to 131 |
0.068 |
Description | Density |
Conductivity |
Cement motor | 1860 |
0.72 |
Lightweight aggregates including expanded shale, clay or slate; expanded slags; cinders; pumice; vermiculite; also cellular concretes | 1920 |
0.75 |
1600 |
0.52 |
|
1280 |
0.36 |
|
960 |
0.24 |
|
640 |
0.17 |
|
Perlite, expanded | 640 |
0.13 |
Sand and gravel or stone aggregate (oven-dried) | 2240 |
1.30 |
Sand and gravel or stone aggregate (not dried) | 2240 |
1.73 |
Stucco | 1860 |
0.72 |
Description | Density |
Conductivity |
Brick, common | 1920 |
0.72 |
Brick, face | 2080 |
1.30 |
Description | Density |
Conductivity |
Hardboard siding, 7/16 in | 640 |
0.094 |
Description | Density |
Conductivity |
Maple, oak, and similar hardwoods | 720 |
0.16 |
Fir, pine, etc. | 510 |
0.12 |