The 6 Most Common Antifouling Application Mistakes

Good antifouling keeps the hull clean for a season; poorly applied, it flakes within months. Here are the most common — and entirely preventable — mistakes.

1. Choosing an incompatible product

New paint that's chemically incompatible with the old blisters and peels quickly. Choosing the right product means knowing the existing system first.

2. Skipping surface prep

Paint won't hold on a dirty, greasy or poorly sanded surface. Quality shows in this invisible step.

3. The wrong number of coats

Too few coats wear early, especially at the waterline and stem. Following the maker's coat count is essential.

4. Bad timing

Paint applied in damp weather or just before launch doesn't cure properly. The dry-and-launch window must follow the maker's instructions.

5. Painting the anodes

Paint over zinc anodes stops them working and galvanic corrosion begins.

6. Ignoring the material

Copper-based paint on aluminium boats causes corrosion; these need a copper-free formula.

Avoiding these mistakes takes the right system and careful application. Under our boat painting and antifouling service we assess your hull and recommend the right product. For which type to choose, see our selection guide.