Sherwin-Williams undercoats are engineered to deliver exceptional adhesion, corrosion resistance, and long-term performance in demanding industrial and commercial environments. Trusted by specifiers, contractors, and maintenance professionals, Sherwin-Williams Kem-Kromik, Macropoxy, Acrolon, and Dura-Plate undercoats form the backbone of high-performance coating systems designed to protect steel, metal, and concrete substrates.