The December 2023 completion of the expansion and upgrade of the 3M Materials and Film Plants in Decatur, Alabama, enhances the plant’s workplace safety and production throughput. PENETRON ADMIX SB, a crystalline concrete waterproofing admixture, was chosen as a permanent concrete waterproofing solution. The 3M facility in Decatur was launched over 60 years ago and comprises both the Materials Plant (adhesives, curatives, fluoropolymers, primers, protective treatments, and specialty chemicals) and the Film Plant (specialty resins and specialty film). The recent $9.5 million expansion of the 3M facility near the Tennessee River encompassed upgrades to facility infrastructure, safety improvements, ventilation system improvements, and process upgrades. These investments enhance the facility’s workplace safety environment and ensures the reliability of production output. The mechanical pits in both plants are exposed to high groundwater levels from below and trade waste that can collect on the pit floor from above. The project engineers initially specified a competitive waterproofing solution to protect the concrete structures of the pits from corrosion. However, Moon Concrete Services, the project’s ready-mix concrete supplier, submitted PENETRON ADMIX SB, a crystalline waterproofing admixture, as an alternative solution. The Penetron Group is a leading manufacturer of specialty construction products for concrete waterproofing, concrete repairs and floor preparation systems. For more, visit www.penetron.com.