How to Maintain PropSpeed and Other Running Gear Coatings

Getting a foul-release coating applied to your propeller and running gear is only half the equation — how it's maintained afterward has a big effect on how long it lasts and how well it keeps performing. Here's how maintaining a coated propeller and shaft differs from maintaining painted hull surfaces, and what to ask your diver to do differently.

Why It Matters

Foul-release coatings work by presenting an ultra-smooth surface that growth struggles to attach to — but that smoothness is also what makes the coating different to clean than traditional antifouling paint. Treating it the same way you'd treat a painted hull, with firm pads or scrapers, can damage the coating's surface and shorten its lifespan well before it would otherwise need replacing.

How It Works

Because foul-release coatings don't rely on biocide release the way antifouling paint does, there's no "wearing away" mechanism built into their design. The coating is meant to stay intact and smooth for as long as possible, with fouling prevention coming entirely from the surface's slickness. That means maintenance goals are different:

• With antifouling paint, some surface wear over time is expected and even necessary, since it's part of how the biocide gets released.

• With foul-release coatings, the goal is the opposite — preserve the smooth surface for as long as possible, since damage to that surface reduces its effectiveness.

In practice, this means cleaning should be light and non-abrasive: a soft pad or cloth wipe is typically enough to remove any light growth or biofilm that does attempt to attach, rather than the firmer scraping sometimes needed on established barnacle growth over paint.

Common Mistakes Boat Owners Make

• Asking for the same aggressive cleaning used on the hull. This is the most common way a foul-release coating gets damaged prematurely.

• Waiting too long between light cleanings. While these coatings resist attachment far better than bare metal or paint, periodic light maintenance still helps keep the surface at its most effective, especially in Florida's warm water.

• Not telling every diver or yard that services the boat about the coating. If someone unfamiliar with foul-release coatings services your running gear, they may default to standard cleaning methods that can harm it.

• Ignoring small areas of damage. A small nick or scrape in the coating can become a starting point for growth to attach, so it's worth having any damage checked rather than assuming it's fine.

Florida-Specific Considerations

Florida's warm water and long fouling season mean coated running gear still benefits from periodic attention, even though it fouls far less than uncoated components. Boats kept in the water full-time — at a marina or private dock — should plan on light, regular check-ins on running gear condition as part of their normal hull cleaning visits, rather than assuming the coating means no attention is needed at all.

Professional Recommendations

• Make sure your regular diver knows which components have a foul-release coating applied, so they use the right cleaning approach every visit.

• Ask for a light touch specifically on coated propellers, shafts, and trim tabs — a soft pad or cloth rather than scraping tools.

• Have coated surfaces checked periodically for any small damage, since catching it early is easier than dealing with fouling that starts at a damaged spot.

Frequently Asked Follow-Up Questions

Can you clean PropSpeed the same way as bottom paint? No — foul-release coatings need a gentler cleaning approach to avoid damaging the smooth surface that makes them effective.

Does PropSpeed still need cleaning if barnacles don't stick to it? Yes, periodic light cleaning is still recommended, particularly in Florida's warm water, even though the coating dramatically reduces how much and how often growth attaches.

What happens if a foul-release coating gets damaged? Damaged areas can become a starting point for growth to attach, so it's worth having any nicks or scrapes assessed rather than leaving them unaddressed.

Have a foul-release coating on your running gear? Contact us to make sure it's part of your regular hull cleaning routine — handled the right way.