Altex Surfacer Undercoat - 4L

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$9.99 North Island
$19.98 South Island

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Altex Yacht & Boat Surfacer Undercoat is designed for use in above water areas only.
It can be used:

  • As a surfacing and build coat in the Single Component topsides marine paint system.
  • As an adhesion/surfacing coat directly to suitably prepared fibre-glass gel-coat.
  • Direct to suitably prepared and sealed timber for cabin interiors.
  • As a tie coat and upgrade on existing sound enamel finishes after correct preparation


  • Proven performance over many years in all above water applications
  • Good long term sandability
  • Excellent long term re-coatability with itself
  • May be used direct on suitably prepared gel-coat
  • Good cure response and sandability make Altex Surfacer Undercoat an excellent surfacing medium to cover minor scratches etc 


  • Colour: Slightly Off-White
  • Thinners; Brush/Roller: Thinning Solvent #45. Spray: Thinning Solvent #53
  • Theoretical Coverage Rate: 10.7 sq metres per litre at 50 microns dry
  • Recommended Film Thickness Per Coat: 94 microns wet to obtain 50 microns dry
  • Application: Spray, brush or roller
  • Dry Times (50 µm DFT / 25°C / 50% RH): Touch Dry: 1 Hr. Dry to Sand: Overnight
  • Recoat Times (50 µm DFT / 25°C / 50% RH): 6-8 Hr min with self or Regatta® Gloss Enamel. Aged Recoat - maximum 1 week without sanding

For more information, Product Data Sheets and MSDS. Please see

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