ROCEpoxy Direct-to-Metal Epoxy Mastic 9100 is a two-component, high solids epoxy coating that provides a durable, abrasion and chemical resistant protective surface suitable for most all industrial environments. As Rust-Oleum’s most versatile industrial product, it can be applied directly to sound rusted steel, galvanized metal, clean steel, concrete, and even slightly damp surfaces. This product was developed with the end user in mind. It has a convenient 1:1 mix ratio, a pot life of a minimum of two hours, and has multiple activator options, including: Fast Cure, Low Temp, Immersion, Satin Finish as well as the Standard activator. Can also be used as a primer under Rust-Oleum ROCThane high performance topcoats. ROCEpoxy Direct-to-Metal Epoxy Mastic 9100 is available in two VOC levels, 340 VOC and 250 VOC, depending on the activator you choose.