When evaluating different prefabricated insulated wall panel options, many project owners find themselves choosing between the EPS Cement Sandwich Panel and magnesium oxide (MgO) sandwich panel, and understanding their key differences will help you make the best decision for your project. The EPS Cement Sandwich Panel uses standard Portland cement for its outer facings, which is a very widely available, well understood building material that almost every local construction crew already has experience working with. This makes it much easier to find qualified installers, and there are no special unique handling requirements that crews need to learn before working with the material. The EPS Cement Sandwich Panel is also typically more affordable than equivalent thickness MgO panels, and it does not carry the risk of potential salt migration and efflorescence that some lower quality MgO panel products are known for developing over time. That said, MgO panels do offer slightly higher flexural strength and better fire performance ratings in some cases, but they usually come at a significantly higher material cost. For most standard residential, commercial, and industrial construction projects that prioritize proven performance, easy installation, and lower long term maintenance risk, the EPS Cement Sandwich Panel is the more practical, cost effective choice of the two.