| Name | Description |
|---|---|
| Tempered Hardboard | Best Value |
| Asbestos-Free Cement Board | Water resistant - non-combustible |
| .060 Solid Plastic | Insulated panels only - water resistant - light weight - improves panel R-value |
| 4mm Corrugated Plastic (HDPE) | Water resistant - light weight - improves panel R-value |
| Gypsum | An interior substrate used to meet local fire codes |
| 6mm Corrugated Plastic (HDPE) | Water resistant - light weight - veneer panels only |