Steel Building Insulation Options
Fiberglass R-Value
The higher the insulation blanket thickness, the higher the R-Value of the insulation. R-Value is a measurement of the effectiveness to retard or prevent the loss of heat flow. To achieve higher R-Values, two layers of insulation can be applied.
| SINGLE LAYER | R-VALUE | DOUBLE LAYER | HIGH R-VALUE |
| 2.5″ | R-8 | 3″+6″ | R-29 |
| 3″ | R-10 | 3.5″+6″ | R-30 |
| 3.5″ | R-11 | 4″+6″ | R-32 |
| 4″ | R-13 | 2.5+8″ | R-33 |
| 6″ | R-19 | 3″+8″ | R-35 |
| 8″ | R-25 | 6″+6″ | R-38 |
| 9.25″ | R-30 | 3″+9.25″ | R-40 |
| 4″+9.25″ | R-43 |
