Underwater Primer 2.5L

Underwater Primer 2.5L

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SHIELD Underwater Primer is a specially formulated primer for use below the waterline under CU-PRO Premium Antifouling.

It can also be used to seal over existing antifouling or direct to GRP, aluminum, steel, wood or ferro cement.

SHIELD Underwater Primer was previously known as CU-Pro Primer.

Grey in colour.


  • Application Brush, roller, or airless spray
  • Coverage 8 - 10 m² per litre
  • no. of recommended coats    1 or 2
  • Drying time Touch dry in 30 minutes at 23° C
  • Overcoating time 8 hours at 23° C
  • Thinner SML CU-PRO thinner

Product features

  • Great value!
  • GRP, wood, steel, ferro cement, & aluminium
  • Tiecoat over unknown or hard antifoulings

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    Underwater Primer 2.5L