Exterior building walls face constant exposure to driving rain, wind driven moisture, temperature fluctuations and extreme weather events that can destroy inferior wall materials in just a few years. EPS Cement Sandwich Panel has been specifically engineered to deliver exceptional waterproof performance that prevents liquid water penetration even under extreme weather conditions, eliminating the hidden moisture damage that plagues so many modern building facades.
The dense, low porosity fiber cement facings on both sides of EPS Cement Sandwich Panel have a water absorption rate of less than 8 percent by total volume, far lower than the 15 to 20 percent water absorption rate of traditional clay brick and standard concrete block. This means rainwater cannot easily penetrate into the body of the panel material itself. Even more importantly, the factory finished tongue and groove joint design creates a labyrinth style interlocking connection between adjacent panels that blocks water from traveling horizontally through the wall assembly, even before any joint sealant is applied. When the joints are finished with specialized waterproof cement mortar, the entire wall system achieves a complete waterproof performance that can withstand continuous heavy monsoon rain exposure for weeks without any water penetration.
This waterproof performance has been validated in some of the wettest regions on Earth. Builders in tropical monsoon zones across Southeast Asia have been using EPS Cement Sandwich Panel for exterior walls for over 12 years, and long term site inspections have found zero instances of water leaking through intact panel walls. Unlike traditional masonry walls that require multiple layers of separate waterproof coatings that can crack and fail over time, EPS Cement Sandwich Panel delivers its waterproof performance as an inherent characteristic of the panel itself, so it will not degrade even without regular reapplication of surface waterproof treatments.
