ALTEX PrimaShield Anitfouling Sealer

Maintenance & Hardware

ALTEX PrimaShield Anitfouling Sealer

Product Name Part Number Stock Price Qty
4L 827S040 Low Stock $189.00
1L 827S010 Out of stock $55.50


PrimaShield Antifouling Sealer is a quick drying, general purpose, below waterline primer designed to provide both exceptional water barrier and tie coat properties to a large range of substrates prior to applying antifouling

PrimaShield Antifouling Sealer is used on the following substrates:

  • Mild steel & Corten steel hulls & keels
  • Timber hulls (sealed with Altex Epoxy TimberSealer)
  • Aged exposed epoxy primers / undercoats
  • Exposed fibreglass, gelcoat or GRP
  • Aged antifoulants - suitable for use as a barrier/sealer coat between unknown or incompatible antifoulings.
  • Other substrates – see over page.

PrimaShield Antifouling Sealer also helps prevent leaching of TBT from an underlying antifouling coating provided it is applied at a minimum dry film thickness of 80 microns (minimum 2 coats by roller).

PrimaShield Antifouling Sealer is used for spot priming of exposed primers & undercoats during maintenance repaints of antifoulings. These spot applications ensure good adhesion of the antifouling to an aged substrate.



  • Single pack direct to steel primer
  • Extended time to re-coat with itself or with all solvent borne antifoulings
  • Excellent corrosion protection
  • May be used to seal old antifouling coatings
  • Fast dry time
  • Excellent application properties – easy to brush / roll
  • Excellent water immersion resistance
  • Reinforced with aluminium flake
  • Fully compatible primer & sealer for all Altex antifoulings (see Note overleaf)
  • Excellent primer & sealer for immersed wooden hulls