Jotun Jotamastic 90 Marine Surface Tolerant Epoxy Primer

High Build High Solids Surface Tolerant two pack Epoxy Mastic Primer Finish. Ideal for applications when abrasive blast cleaning is not practical. Marine Underwater Primer.

Jotun Paint Can

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Jotun Jotamastic 90 Marine Surface Tolerant Epoxy Primer

Jotamastic 90 is a high build Surface Tolerant Epoxy primer finish which can be applied to mechanically prepared steel without the need for abrasive blast cleaning. It is suitable as a primer above and below the water line and can be applied to St2 mechanically prepared steel also to existing aged coatings. It is approved to Norsok system 7a and 7b, Network Rail and the highways agency, an offshore underwater marine primer with excellent mechanical and water resistance. It is recommended as a maintenance system for steel structures providing long term protection against corrosion. It is ideal to protect metal and concrete structures underground or underwater.  It can be used as an underwater primer on steel vessels and offshore steelwork in the splash zone. It may also be used as a mechanical and chemical resistant floor coating on concrete. Jotamastic 90 is available in a wide range of RAL and British standard colours in a semigloss finish excluding some strong Oranges & Yellows. A wintergrade version is also available for faster drying in low temperature winter months. Available in 5lt and 20lt packs for free delivery throughout the UK.
RAL Classic 1000
RAL Classic 2000
RAL Classic 3000
RAL Classic 4000
RAL Classic 5000
RAL Classic 6000
RAL Classic 7000
RAL Classic 8000
RAL Classic 9000

  • High Build High Solids Surface Tolerant two pack Epoxy Mastic Primer Finish. Ideal for applications when abrasive blast cleaning is not practical.
  • Marine underwater Epoxy Primer. Excellent Mechanical and Water Resistance. Adheres to most Surfaces. Upto 300 microns in a single coat by Airless Spray. Norsok approved.
  • High Coverage rates. For topsides overcoat with a range of Hardtop Polyurethane paints for long term colour and protection. Winter grade available. Wide range of RAL & BS colours. Free Delivery throughout the UK.

Technical Credentials

High Build Surface Tolerant Epoxy Primer Finish.

High Volume Solids 80%.

Semigloss Finish

Dry Film Thickness 100-300 microns.

Theoretical Coverage 8 m2/lt (100 mics.)

Surface Dry 4 hrs @ 23c.

Overcoat 3hrs @ 23c.

Pot Life 2 hrs @ 23c.

Apply by Airless Spray, Roller or Brush.

Thinner No. 17.

VOCs 234 g/lt.

Surface Preparation

Carbon Steel: Minimum St 2 , Recommended Abrasive blast clean to Sa 2.5. (ISO 8501-1)

Coated Surfaces: Ensure the existing coat is intact, compatible, dry and free from oil grease and other contaminants.

Concrete: Mechanically abrade to remove loosely adhering material and laitance. Alternatively low pressure water washing to a rough , clean and laitance free surface. Moisture content at painting max 5%.

Download the technical data sheet for more information.

View Datasheet Here

Jotun Jotamastic 90 has excellent corrosion and abrasion resistance for steel where abrasive blast cleaning may not be possible. Recommended for use on steel above and below the waterline or as a primer as part of a multicoat system for C5-M coastal and C4 Industrial environments. Available in a wide range of RAL and British standard colours in a semigloss finish.

Jotamastic 90 is a high solids, high build, two pack surface tolerant epoxy mastic with excellent abrasion and corrosion resistance. The aluminium version is recommended as a first coat to provide extra corrosion and water resistance. It can be applied by Airless spray, brush or Roller. It is designed for use on steel when abrasive blast cleaning may not be possible, it may be used above and below the water line, the winter grade version can be applied at sub zero temperatures. It is resistant to continuous operating temps of 120c and in immersed seawater at 50c.

Jotamastic 90 is a two pack epoxy semigloss suitable for use in atmospheric and immersed environments as a primer or intermediate coat in a multicoat system. It can be applied direct to carbon steel, stainless steel, galvanised steel, aluminium, conctrete and over previously coated surfaces. It may be used as an economic high build epoxy floor coating on concrete floors requiring resistance to heavy fork lift traffic, chemicals and abrasion. It is recommended for offshore environments, new construction, marine hulls, topside and superstructures. It can be applied up to 300 microns in a single coat by airless spray, two coats may be required to achieve the recommended DFT by roller.

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