Many project owners want to see real world proof that the EPS Cement Sandwich Panel can deliver reliable performance over many years of actual use, and there are now dozens of well documented long term case studies from installations that are 10 years old or older. One well documented case study follows a large 2000 square meter warehouse in a temperate climate region that was fully constructed using EPS Cement Sandwich Panel exterior walls back in 2012. After 12 full years of exposure to seasonal rain, temperature swings, and regular industrial use, a full independent inspection found that the panels showed almost no signs of delamination, warping, or insulation performance loss. The exterior paint finish was still mostly intact, and the wall system was still delivering the exact same thermal insulation performance that it did on the day it was first installed. Another case study tracked a multi family residential apartment building that used EPS Cement Sandwich Panel for all its interior partition walls, and after 8 years of daily resident use, the panels showed almost no signs of damage, and residents consistently reported very good sound privacy between adjacent units. These real world long term case studies prove that when installed and maintained correctly, the EPS Cement Sandwich Panel is an extremely durable building material that will deliver consistent performance for well over 20 years of active service.