A Surface Tolerant High Build Epoxy Primer for Steel.

Suitable for use underwater. May be used when abrasive blast cleaning is not economic or practical. 300 mics in a single coat. Norsok approved.

Overcoat with a range of Hardtop Polyurethane paints for long term Colour & Protection. Winter grades available. Available in Aluminium, White, Black, Red and Grey. Free Next Day Delivery.

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Jotun Jotamastic 87 a high build, high solids two pack surface tolerant epoxy primer

Jotamastic 87 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 environments. It is available in 7 distinct colours.


Jotamastic 87 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. Jotamastic 87 Surface Tolerant Epoxy Primer is designed for use on steel when abrasive blast cleaning may not be possible. Jotamastic 87 Primer 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 87 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 and over previously coated surfaces. Jotamastic 87 Surface Tolerant Epoxy Primer 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.

Surface Preparation

Carbon Steel:  Minimum St 2 (ISO 8501-1)
Galvanised steel:  Surface to be clean and dry with a rough dull surface
Aluminium, Stainless:  Surface to be clean and dry, abrade with non metallic abrasives or pads
Painted surfaces:  Surface to be clean, dry and undamaged compatible coating, free from oil grease and other contaminants.

Technical Data

Jotamastic 87
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Jotamastic 87 Comp A
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Jotamastic 87 Comp B
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Volume Solids (ISO 3223):  82%
VOC Content:  210 g/lt
Flash point (ISO 3679): 35c
Dry Film thickness:  150-300 microns
Wet Film thickness:  180-365 microns
Theoretical coverage:  5.5-2.7 sq m/lt
Mix Ratio:  6:1
Pot Life 23c:  2 hrs
Touch Dry 23c:  7 hrs
Overcoat 23c:  10 hrs
Nozzle tip:  23-32 thou
Pressure at nozzle:  2100psi
Thinner:  No. 17
H&S:  Observe the precautionary information on the container. Refer to MSDS for full details on health and safety and storage regulations.


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