Jotun Jotamastic 90 AL Wintergrade

Jotun Jotamastic 90 AL Wintergrade

Buy Jotun Jotamastic 90 AL Wintergrade marine primer online UK, for sailing boats and yachts with free delivery to the UK. 

Wintergrade version of Jotamastic 90 AL Wintergrade for application below 10°C and faster curing times in normal conditions.

Aluminium flakes in this version of Jotamastic 90 create an impenetrable barrier to water and increased coating flexibility. The epoxy binds the coating together to give it considerable strength, particularly when applied to vulnerable areas. The aluminium range is particularly suited for submerged areas

Jotamastic 90 offers the longest lifetime in any environment. It has exceptional corrosion resistance, is fast drying - greatly improving efficiency, and is designed to be safely applied from 100 to 300 microns in a single coat over a wide temperature and humidity range.

Jotamastic 90 is surface tolerant and can be applied on surfaces that appear dry but where moisture remains and flash rusting has begun. It is ideal for use when blast cleaning is not possible.

Unlike the Standard version of Jotamastic 90 this product is only available in Aluminium colour.

Note:  The pack size (including hardener) is 4.55 litres and 20 litres nominal as the exact quantity of paint is colour dependent (the quantity of tint varies with each colour).

Use the Jotamastic 90 AL version for application above 10°C and slower curing times giving a longer pot life.

Recommended topcoats (above the waterline):

  • Standard: Pioner Topcoat
  • Premium: Hardtop AX
  • Eco: Hardtop CA
  • Other topcoat options available. Please call us for advice.


Application MethodBrush, roller or high pressure airless spray
No. of recommended coats1 coat followed by 2 coats Jotamastic 90
Dry to overcoat @ 23°C2 hours
Curing time @ 23°C3 days
Pot life @ 23°C45 minutes
ThinnerJotun Thinners No. 17 or SML Epoxy Thinner
Water resistanceExcellent
Chemical resistanceGood
Solvent resistanceGood

GuideDownload Size
 Application Guide1.08 MB
 Data sheet883.6 KB
 Comp A safety746.05 KB
 Wintergrade Comp B safety1.07 MB

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    Jotun Jotamastic 90 AL Wintergrade