Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!
Thermal resistance to heat flow for faced and unfaced duct wrap insulation:
| Insulation Density (lbs/cu.ft) | Insulation Thickness (in) | R-value Installed (h ft2 oF / Btu) | |
|---|---|---|---|
| Unfaced | Faced | ||
| 50 | 1 1/2 | 3.6 | |
| 2 | 4.8 | ||
| 3 | 7.3 | ||
| 75 | 1 | 2.6 | 3.8 |
| 1 1/2 | 3.9 | 5.0 | |
| 2 | 5.2 | 6.3 | |
| 3 | 7.8 | 7.5 | |
| 100 | 1 | 2.8 | |
| 1 1/2 | 4.2 | ||
| 2 | 5.6 | ||
| 150 | 1 | 3.0 | |
| 1 1/2 | 4.5 | ||
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