Duct Wrap Insulation - Thermal Resistance
Sponsored Links
Faced insulation has a vapor paper or plastic facing retarder. Unfaced insulation lacks the retarder.
The vapor retarder helps to prevent mold and mildew. Faced insulation should be used in exterior walls and attic ceilings. Check the local building codes for the vapor retarder requirements.
Thermal resistance to heat flow for faced and unfaced duct wrap insulation:
| Type |
Insulation Density | Insulation Thickness (in) | R-value Installed (h ft2 oF / Btu) | |
|---|---|---|---|---|
| Unfaced | Faced | |||
| 50 | 0.5 | 1 1/2 | 3.6 | |
| 2 | 4.8 | |||
| 3 | 7.3 | |||
| 75 | 0.75 | 1 | 2.6 | 3.8 |
| 1 1/2 | 3.9 | 5.0 | ||
| 2 | 5.2 | 6.3 | ||
| 3 | 7.8 | 7.5 | ||
| 100 | 1.0 | 1 | 2.8 | |
| 1 1/2 | 4.2 | |||
| 2 | 5.6 | |||
| 150 | 1.5 | 1 | 3.0 | |
| 1 1/2 | 4.5 | |||
- 1 h ft2 oF / Btu = 0.18 m2 oC / W
Sponsored Links
Related Topics
• Insulation
Calculate heat transfer and heat loss from buildings and technical applications. Heat transfer coefficients and insulation methods available for reduction of energy consumption.
Related Documents
Heat Transmission Loss through Building Elements
Heat loss through common building elements due to transmission, R-values and U-values - imperial and SI units.
Insulation Materials - Operating Temperature Limits
Temperature limits for commonly used insulation materials.
Sponsored Links