Jotamastic 90 is a two-component, polyamine-cured epoxy mastic coating engineered for optimal surface tolerance, providing exceptional corrosion protection in both atmospheric and immersed environments. As Component A, this high-solids base formulation delivers excellent film build and robust chemical resistance, making it ideal for the repair and maintenance of carbon steel where complete surface preparation is difficult. The product functions seamlessly as a primer, mid-coat, or self-priming single-coat system, ensuring dependable adhesion to marginally prepared or aged surfaces. It is available with different hardener options to accommodate varying application temperatures, facilitating efficient curing and reliable performance across diverse marine and industrial structures.