Jotamastic 90 by Jotun is a tintable, surface-tolerant epoxy mastic primer specially developed for maintenance and repair applications in highly corrosive environments. Known for its abrasion resistance and robust protection, this product delivers long-lasting performance even where optimum surface preparation is not possible.

Designed to be used as a primer, midcoat, finish coat, or single-coat system, Jotamastic 90 performs exceptionally well in both atmospheric and immersed conditions. Its fast overcoating intervals and application in sub-zero surface temperatures make it an efficient, user-friendly solution across a variety of industries and climates.

Jotamastic 90 is tintable via Jotun’s Multicolor Industry (MCI) system, offering a wide range of colour options. It adheres to a broad range of substrates including carbon steel, galvanised steel, stainless steel, aluminium, concrete, and even aged coatings.

This coating also supports sustainability goals—contributing to green building certifications such as LEED 2009, LEED v4, and BREEAM International—making it the ideal protective choice for eco-conscious infrastructure.

Key Features:

• Surface-tolerant for minimal surface prep

• Tintable in a wide colour range

• Short overcoating intervals for faster project completion

• Excellent abrasion resistance

• Suitable for atmospheric and immersed environments

• Long-term corrosion protection in C5 environments

• Compatible with steel, aluminium, concrete, and aged coatings

• Supports green building credits (LEED & BREEAM)

• Can be applied at sub-zero temperatures

• Robust, durable, and easy to use