Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Fiberglass insulation is listed as a Material object on BCL under Components -> Material -> Opaque -> Insulation.
| | 2 | No.2 Revision |
Fiberglass ~~Fiberglass insulation is listed as a Material object on BCL under Components -> Material -> Opaque -> Insulation.Insulation.~~
Deleting my original answer; BCL has fiberglass exterior continuous insulation, but not batts. The reason for this is thermal bridging from the studs will greatly change the assembly characteristics. You should instead use on the of pre-made construction assemblies that account for thermal bridging, or use CA Title 24 Appendix JA4 or ASHRAE 90.1 Appendix A values for overall assembly U-values for a given wall assembly
| | 3 | No.3 Revision |
~~Fiberglass insulation is listed as a Material object on BCL under Components -> Material -> Opaque -> Insulation.~~
Deleting my original answer; BCL has fiberglass exterior continuous insulation, but not batts. The reason for this is thermal bridging from the studs and amount of continuous insulation will greatly change the assembly characteristics. effectiveness of batt insulation. You should instead use on the of pre-made construction assemblies that account for thermal bridging, or use CA Title 24 Appendix JA4 or ASHRAE 90.1 Appendix A values for overall assembly U-values for a given wall assemblyassembly. You can adjust the wall insulation material in one of the pre-made construction assemblies to get the target T24 or 90.1 value.
| | 4 | No.4 Revision |
Deleting my original answer; BCL has fiberglass continuous insulation, insulation, but not batts. The reason for this is thermal bridging from the studs and amount of continuous insulation will greatly change the effectiveness of batt insulation. You should instead use on the of pre-made construction assemblies that account for thermal bridging, or use CA Title 24 Appendix JA4 or ASHRAE 90.1 Appendix A values for overall assembly U-values for a given wall assembly. You can adjust the wall insulation material in one of the pre-made construction assemblies to get the target T24 or 90.1 value.
| | 5 | No.5 Revision |
Deleting my original answer; BCL has fiberglass continuous insulation, but not batts. The reason for this is thermal bridging from the studs and amount of continuous insulation will greatly change the effectiveness of batt insulation. You should instead use on the of pre-made construction assemblies that account for thermal bridging, or use CA Title 24 Appendix JA4 or ASHRAE 90.1 Appendix A values for overall assembly U-values for a given wall assembly. You can adjust the wall insulation material in one of the pre-made construction assemblies to get the target T24 or 90.1 value.
There is some discussion on whether to include a parallel path method for specifying constructions in EnergyPlus to account for assemblies like this that include batt insulation, but this is still a poor approximation given the 2D nature of heat transfer with studs.
