ASHRAE-90.1-2022- - Page 249
Extracted Content
Table A3.1-4 Effective R-Values for Insulation/Framing Layers Added to Above-Grade Mass Walls and Below-Grade Walls
Depth,
in.
| Framing Type | Col2 | Col3 | Col4 | Col5 | Col6 | Col7 | Col8 | Col9 | Col10 | Col11 | Col12 | Col13 | Col14 | Col15 | Col16 | Col17 | Col18 | Col19 | Col20 | Col21 | Col22 | Col23 | Col24 | Col25 | Col26 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Framing Type | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
Effective R-value if Continuous Insulation Uninterrupted by Framing (Includes Gypsum Board)
None 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21.5 22.5 23.5 24.5 25.5
Effective R-value if Insulation is Installed in Cavity between Framing (Includes Gypsum Board)
| 0.5 | Wood | 1.3 | 1.3 | 1.9 | 2.4 | 2.7 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.5 | Metal | 0.9 | 0.9 | 1.1 | 1.1 | 1.2 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 0.75 | Wood | 1.4 | 1.4 | 2.1 | 2.7 | 3.1 | 3.5 | 3.8 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 0.75 | Metal | 1.0 | 1.0 | 1.3 | 1.4 | 1.5 | 1.5 | 1.6 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 1.0 | Wood | 1.3 | 1.5 | 2.2 | 2.9 | 3.4 | 3.9 | 4.3 | 4.6 | 4.9 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 1.0 | Metal | 1.0 | 1.1 | 1.4 | 1.6 | 1.7 | 1.8 | 1.8 | 1.9 | 1.9 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 1.5 | Wood | 1.3 | 1.5 | 2.4 | 3.1 | 3.8 | 4.4 | 4.9 | 5.4 | 5.8 | 6.2 | 6.5 | 6.8 | 7.1 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 1.5 | Metal | 1.1 | 1.2 | 1.6 | 1.9 | 2.1 | 2.2 | 2.3 | 2.4 | 2.5 | 2.5 | 2.6 | 2.6 | 2.7 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 2.0 | Wood | 1.4 | 1.5 | 2.5 | 3.3 | 4.0 | 4.7 | 5.3 | 5.9 | 6.4 | 6.9 | 7.3 | 7.7 | 8.1 | 8.4 | 8.7 | 9.0 | 9.3 | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 2.0 | Metal | 1.1 | 1.2 | 1.7 | 2.1 | 2.3 | 2.5 | 2.7 | 2.8 | 2.9 | 3.0 | 3.1 | 3.2 | 3.2 | 3.3 | 3.3 | 3.4 | 3.4 | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 2.5 | Wood | 1.4 | 1.5 | 2.5 | 3.4 | 4.2 | 4.9 | 5.6 | 6.3 | 6.8 | 7.4 | 7.9 | 8.4 | 8.8 | 9.2 | 9.6 | 10.0 | 10.3 | 10.6 | 10.9 | 11.2 | 11.5 | NA | NA | NA | NA | NA |
| 2.5 | Metal | 1.2 | 1.3 | 1.8 | 2.3 | 2.6 | 2.8 | 3.0 | 3.2 | 3.3 | 3.5 | 3.6 | 3.6 | 3.7 | 3.8 | 3.9 | 3.9 | 4.0 | 4.0 | 4.1 | 4.1 | 4.1 | NA | NA | NA | NA | NA |
| 3.0 | Wood | 1.4 | 1.5 | 2.5 | 3.5 | 4.3 | 5.1 | 5.8 | 6.5 | 7.2 | 7.8 | 8.3 | 8.9 | 9.4 | 9.9 | 10.3 | 10.7 | 11.1 | 11.5 | 11.9 | 12.2 | 12.5 | 12.9 | NA | NA | NA | NA |
| 3.0 | Metal | 1.2 | 1.3 | 1.9 | 2.4 | 2.8 | 3.1 | 3.3 | 3.5 | 3.7 | 3.8 | 4.0 | 4.1 | 4.2 | 4.3 | 4.4 | 4.4 | 4.5 | 4.6 | 4.6 | 4.7 | 4.7 | 4.8 | NA | NA | NA | NA |
| 3.5 | Wood | 1.4 | 1.5 | 2.6 | 3.5 | 4.4 | 5.2 | 6.0 | 6.7 | 7.4 | 8.1 | 8.7 | 9.3 | 9.8 | 10.4 | 10.9 | 11.3 | 11.8 | 12.2 | 12.6 | 13.0 | 13.4 | 13.8 | 14.1 | 14.5 | 14.8 | 15.1 |
| 3.5 | Metal | 1.2 | 1.3 | 2.0 | 2.5 | 2.9 | 3.2 | 3.5 | 3.8 | 4.0 | 4.2 | 4.3 | 4.5 | 4.6 | 4.7 | 4.8 | 4.9 | 5.0 | 5.1 | 5.1 | 5.2 | 5.2 | 5.3 | 5.4 | 5.4 | 5.4 | 5.5 |
| 4.0 | Wood | 1.4 | 1.6 | 2.6 | 3.6 | 4.5 | 5.3 | 6.1 | 6.9 | 7.6 | 8.3 | 9.0 | 9.6 | 10.2 | 10.8 | 11.3 | 11.9 | 12.4 | 12.8 | 13.3 | 13.7 | 14.2 | 14.6 | 14.9 | 15.3 | 15.7 | 16.0 |
| 4.0 | Metal | 1.2 | 1.3 | 2.0 | 2.6 | 3.0 | 3.4 | 3.7 | 4.0 | 4.2 | 4.5 | 4.6 | 4.8 | 5.0 | 5.1 | 5.2 | 5.3 | 5.4 | 5.5 | 5.6 | 5.7 | 5.8 | 5.8 | 5.9 | 5.9 | 6.0 | 6.0 |
| 4.5 | Wood | 1.4 | 1.6 | 2.6 | 3.6 | 4.5 | 5.4 | 6.2 | 7.1 | 7.8 | 8.5 | 9.2 | 9.9 | 10.5 | 11.2 | 11.7 | 12.3 | 12.8 | 13.3 | 13.8 | 14.3 | 14.8 | 15.2 | 15.7 | 16.1 | 16.5 | 16.9 |
| 4.5 | Metal | 1.2 | 1.3 | 2.1 | 2.6 | 3.1 | 3.5 | 3.9 | 4.2 | 4.5 | 4.7 | 4.9 | 5.1 | 5.3 | 5.4 | 5.6 | 5.7 | 5.8 | 5.9 | 6.0 | 6.1 | 6.2 | 6.3 | 6.4 | 6.4 | 6.5 | 6.6 |
| 5.0 | Wood | 1.4 | 1.6 | 2.6 | 3.6 | 4.6 | 5.5 | 6.3 | 7.2 | 8.0 | 8.7 | 9.4 | 10.1 | 10.8 | 11.5 | 12.1 | 12.7 | 13.2 | 13.8 | 14.3 | 14.8 | 15.3 | 15.8 | 16.3 | 16.7 | 17.2 | 17.6 |
| 5.0 | Metal | 1.2 | 1.4 | 2.1 | 2.7 | 3.2 | 3.7 | 4.1 | 4.4 | 4.7 | 5.0 | 5.2 | 5.4 | 5.6 | 5.8 | 5.9 | 6.1 | 6.2 | 6.3 | 6.5 | 6.6 | 6.7 | 6.8 | 6.8 | 6.9 | 7.0 | 7.1 |
| 5.5 | Wood | 1.4 | 1.6 | 2.6 | 3.6 | 4.6 | 5.5 | 6.4 | 7.3 | 8.1 | 8.9 | 9.6 | 10.3 | 11.0 | 11.7 | 12.4 | 13.0 | 13.6 | 14.2 | 14.7 | 15.3 | 15.8 | 16.3 | 16.8 | 17.3 | 17.8 | 18.2 |
| 5.5 | Metal | 1.3 | 1.4 | 2.1 | 2.8 | 3.3 | 3.8 | 4.2 | 4.6 | 4.9 | 5.2 | 5.4 | 5.7 | 5.9 | 6.1 | 6.3 | 6.4 | 6.6 | 6.7 | 6.8 | 7.0 | 7.1 | 7.2 | 7.3 | 7.4 | 7.5 | 7.6 |