PET offers excellent chemical resistance. At ambient temperatures, it is inert to most organic solvents, acids (except strong concentrated acids), alkalis, and saline solutions. This makes it particularly suitable for aggressive building environments such as coastal high-salinity zones, chemical processing plants, and wastewater treatment facilities. When paired with a non-ferrous metal face sheet like aluminum, the entire panel system becomes inherently corrosion-proof, eliminating the risk of galvanic corrosion between the core and the skin, which can be a problem with some dissimilar materials, ensuring a 30+ year service life.

