Bottom painting (antifouling) is essential for any boat kept in the water. The right paint prevents marine growth that slows your boat, damages the hull, and increases fuel consumption.
Why Bottom Paint Matters
In South Florida's warm waters, without protection:
- Barnacles can colonize a hull within weeks
- Even light fouling reduces speed by 10-20%
- More drag means more fuel consumption
- Some organisms can penetrate gelcoat
Types of Bottom Paint
Ablative (Self-Polishing)
Most popular for recreational boats. Wears away gradually, exposing fresh biocide.
- Best for: Regular use boats, warm water, trailered boats
- Brands: Interlux Micron, Pettit Hydrocoat, Sea Hawk Cukote
Hard (Contact) Paint
Durable, doesn't wear away. Biocide leaches while film remains.
- Best for: Fast boats, racing, strong currents
- Brands: Interlux Fiberglass Bottomkote, Pettit Trinidad
💡 Florida Recommendation
Ablative paints are ideal for most South Florida boaters. Interlux Micron CSC and Sea Hawk Biocop are local favorites.
The Bottom Painting Process
Preparation (Most Important)
- Haul and pressure wash
- Inspect for blisters or damage
- Scrape and sand loose paint
- Repair any damage
- Clean thoroughly
- Tape waterline
Application
- Stir paint thoroughly (biocide settles)
- Apply first coat with roller
- Allow 2-4 hours drying
- Apply second coat at right angles
- Optional third coat on high-wear areas
⚠️ Safety
Bottom paint contains toxic biocides. Wear respirator, goggles, and protective clothing.
For pricing details, see How Much Does Bottom Painting Cost?
Find hull service professionals through Boatwork.
