null Marine Bottom Paints - Antifouling & Boat Bottom Paints | Defender Marine
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Marine Bottom Paints at Defender:


About Bottom Paint
  • Antifouling bottom paint for boats contains copper compounds or other biocides to deter growth of marine organisms on your boat's hull, helping to keep your boat clean and fast. Defender carries all major brands.
  • We stock copper-based bottom paints, copper-free paints with biocides, and water-based anti-fouling bottom paints as well as bottom paints with anti-slime additives.

  • Ablative Bottom Paint
  • Wears away with use, exposing new biocides
  • Good for impeding marine growth, but requires the boat to move often to work best
  • Use in high fouling areas, or if the boat is hauled out every season
  • Use of a "signal coat" is recommended. A signal coat is a bottom paint of a different color than your final coat. When the signal coat shows through, it's time to consider repainting.

    Hard Bottom Paint
  • Active ingredient leaches out while paint film stays mostly intact
  • Long-lasting, adheres well, abrasion resistant, works equally well at the dock and underway
  • Recommended for boats that regularly run at high speeds or are in water for extended periods
  • Also recommended for trailered boats as it can better withstand abrasion from unloading, loading

  • Water-based Antifouling Paint
  • Has fewer VOCs, less odor, cleans up with soap and water
  • Safe for use on inflatable boats

    Hybrid Bottom Paint
  • Offers all the advantages of ablative and hard paints
  • Exhibits excellent performance, abrasion resistance
  • Recommended for racing boats; some can be burnished to a slick finish

  • Copper-free Bottom Paint
  • Uses alternative biocides like zinc or Econea®
  • Can use over almost any bottom paint; suitable for any substrate, including steel, aluminum
  • Lack of copper allows for a selection of bright colors


  • How much bottom paint will I need for my boat?