Prefabricated modular public toilets need to be built quickly, withstand constant heavy foot traffic, and resist the high humidity and water exposure that comes with daily washroom use, making the EPS Cement Sandwich Panel an ideal material choice for this application. The non porous cement facing on every EPS Cement Sandwich Panel does not absorb splashed water, and it will not warp, swell, or grow mold even when exposed to constant high humidity inside a public washroom. This eliminates the common problem of traditional drywall or wood wall panels deteriorating quickly around sinks, showers, and toilet areas, which leads to frequent costly repair work. The panel surface can be easily wiped down, mopped, or even pressure washed with standard cleaning disinfectants, making daily public restroom maintenance far simpler for facility management teams. The lightweight prefabricated design of the EPS Cement Sandwich Panel also allows entire modular public toilet units to be pre assembled off site, then transported and installed in their final location in a single day. This drastically reduces on site construction time and disruption in public parks, highway rest stops, and community event spaces. Many new public infrastructure projects have already adopted this panel system to build long lasting, low maintenance public toilet facilities at a very reasonable total cost.