Jotun Jotamastic 90: The Ultimate High-Build Epoxy Mastic Coating
The Jotun Jotamastic 90 Kit is a high-performance, polyamine-cured epoxy coating engineered for the toughest environments on Earth. This 4.5L kit (comprising 3.5L Base and 1L Hardener) provides a robust, high-solids barrier against moisture, salt, and chemicals.
Whether you are working on offshore splash zones or industrial steel structures, Jotamastic 90 is the industry standard for maintenance and repair. Its unique surface-tolerant formulation means it bonds exceptionally well to aged coatings and even hand-prepared rusty steel, saving you time and labor costs on surface preparation.
Key Performance Features
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Surface Tolerant Technology: Engineered for projects where grit blasting is not an option. It performs reliably over pitted rust and various aged coatings.
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All-Weather Application: Designed for versatility, this coating can be applied at sub-zero temperatures, making it a go-to choice for winter maintenance and harsh climates.
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Extreme Durability: Provides superior abrasion resistance and long-term protection for carbon steel, galvanized steel, stainless steel, and concrete.
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Rapid Turnaround: Fast curing times and short overcoating intervals help increase productivity and minimize expensive downtime.
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Customizable Aesthetics: Tintable in a vast range of colors with excellent hiding power, often reducing the number of coats required.
Applications & Industry Use
Jotun Jotamastic 90 is a versatile powerhouse used across multiple sectors:
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Marine & Shipping: Perfect for exterior hulls, decks, and interior marine spaces exposed to high humidity and seawater.
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Offshore & Energy: Trusted for splash zones, refineries, petrochemical plants, and power facilities.
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Infrastructure: Used globally for bridges, mining equipment, and general structural steel protection.
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Network Rail & Highways: Approved for specific infrastructure systems (NR/L3/CIV/039).
Technical Specifications & Certifications
This product meets rigorous international standards for safety and performance:
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Low Flame Spread: IMO FTPC Part 5 certified.
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Crude Oil Tank Approved: PSPC Approved (IMO Res. MSC 288(87)).
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Industrial Standards: NORSOK System 1 (Rev 5) and Newcastle Occupational Health Approved.
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Mixing Ratio: 3.5 parts Base A to 1 part Comp B (Standard).
Why Choose the Jotamastic 90 4.5L Kit?
Choosing Jotamastic 90 means choosing a “fit and forget” solution. It functions as a primer, intermediate coat, or a single-coat system, providing flexibility for any specification. With its high-build film formation and industry-leading approvals, it ensures your assets remain protected against corrosion for years to come.
