Pettit Antifouling Paint
Pettit Paint 1184006 Hydrocoat Water-Based Ablative Bottom Paint Black 1 Gallon
Pettit Paint 1167106 Trinidad HD Multi-Season Hard Antifouling Bottom Paint Red Gallon
Seahawk Paints 1005TFGL Islands 44 Tin-Free Antifouling Bottom Paint Black Gallon
Interlux Paint 5608358 VC Offshore Hard Vinyl Antifouling Bottom Paint Blue Gallon
What Is Antifouling Paint and Why Does Your Boat Need It?
Antifouling paint — also called bottom paint — is one of the most essential maintenance products for any wet-stored vessel. Antifouling bottom paint is applied to the hull below the waterline to slow the growth of and facilitate detachment of subaquatic organisms that attach to the hull and can affect a vessel's performance and durability. When boats spend time in the water, they become exposed to organisms like bacteria, algae, mollusks, barnacles, and mussels. When these organisms grow and colonize on the bottoms of boats, it's called fouling — and the toll it takes can be considerable, reducing top speed, raising fuel consumption, and shortening hull life.
Antifouling paints work by delivering a controlled, steady release of biocide from the paint surface into the microscopic layer of water next to the hull, stopping fouling from settling. Modern formulas are engineered to release just the right amount of biocide to keep the surface clean throughout the season without excessive environmental impact.
Types of Antifouling Paint: Choosing the Right Formula
There are two primary antifouling paint types, each suited to different boating habits and hull designs:
- Hard (Modified Epoxy) Antifouling: These paints create a durable, non-eroding surface packed with biocides. Hard antifouling is ideal for performance racing vessels since it can be scrubbed and burnished to create a smooth hull with minimal drag. It is also well-suited to high-speed motorboats and vessels that sit in the water without moving frequently. The trade-off is that layers build up over multiple seasons and require sanding before reapplication.
- Ablative (Self-Polishing) Antifouling: Ablative paints wear away with use, exposing new biocides as the paint film erodes — working similarly to a bar of soap. Because the paint wears away, ablative coatings require little or no sanding at haulout, making reapplication much easier. Multi-season ablative formulas are a popular choice for cruising powerboats and sailboats.
- Hybrid Antifouling: Hybrid formulas combine the benefits of both types — offering a hard paint surface that does not build up over time, while the film eventually breaks down to expose fresh biocide. These resist buildup, can be burnished, and hold up to dry storage and trailering.
- Copper-Free Antifouling: For aluminum hulls or environmentally sensitive areas, copper-free formulas use alternative biocides such as Econea (a non-metal biocide) to provide effective protection without the concerns associated with copper leaching.
Key Factors When Shopping Antifouling Paint
Choosing the right antifouling paint depends on your hull material (fiberglass, wood, aluminum, or steel), the waters you boat in (tropical saltwater demands more aggressive protection than a freshwater lake), how often the vessel moves, and whether you dry-store or trailer seasonally. Always verify that the formula you choose is compatible with your existing coating system, and check VOC regulations for your region.
Top Antifouling Paint Brands
Pettit Paint is the category leader with a heritage rooted in antifouling dating back to 1861, making it one of the oldest and most trusted names in marine coatings. Pettit Marine Paint was established through the unification of three iconic marine paint lines — Pettit, Woolsey, and Z-Spar — and continues to innovate with proprietary technologies like Hydrocoat water-based ablatives, Vivid hybrid formulas, and the Trinidad hard antifouling line. Their broad lineup spans hard modified epoxies, ablatives, water-based low-VOC options, and copper-free formulas, covering virtually every hull type and boating region.
Seahawk Paints, made by New Nautical Coatings, is an American-owned manufacturer with a brand established in 1978 and a strong reputation for premium antifouling performance across a wide range of conditions. Seahawk's lineup spans self-polishing copolymer ablatives, hard modified epoxy formulas, copper-free options, and environmentally friendly low-VOC coatings, offering bottom paint solutions for everything from fast powerboats to slow-moving coastal cruisers.
Seachoice rounds out the category with accessible antifouling options that make hull protection attainable for a wider range of boaters, offering practical solutions for budget-conscious boatowners who still demand reliable protection from marine growth.