Pettit Zinc Coat Barnacle Barrier Spray | 16 oz | Zinc Corrosion Protection for Underwater Metals
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Zinc-Based Corrosion Protection for Underwater Metals and Running Gear.
Pettit Zinc Coat Barnacle Barrier is a zinc-rich aerosol spray that provides corrosion protection for bare underwater metals including propellers, shafts, trim tabs, rudders, and other running gear. The high-zinc dry film bonds directly to bare metal surfaces and inhibits corrosion while providing a barrier against barnacle and marine growth attachment.
The smooth, hard finish self-cleans in service and can be used above or below the waterline. Fast-dry formula for quick application and return to service. This product is classified as a hazardous material and is subject to shipping restrictions — confirm availability for your location before ordering.
Key Features
- High-zinc dry film — maximum zinc content for effective cathodic-style corrosion protection
- Bonds to bare aluminum, steel, stainless steel, cast iron, copper, bronze, galvanized steel, and lead
- Inhibits corrosion on underwater metals and running gear
- Smooth, hard finish self-cleans in service
- Suitable for use above and below the waterline
- Fast-dry aerosol formula — convenient for spot application and touch-ups
- 16 oz aerosol can
Compatible Applications
- Propellers — bare aluminum, stainless steel, and bronze props
- Propeller shafts and shaft struts
- Trim tabs and interceptors
- Rudders and skegs
- Outboard lower units and drive housings
- Any bare underwater metal surface requiring corrosion protection and barnacle barrier
- Above-waterline bare metal surfaces requiring zinc corrosion protection
Parts Desk Insights
Zinc Coat Barnacle Barrier is the right product when you need to protect a bare metal running gear surface that isn't covered by your hull's antifouling paint — particularly propellers, which are typically left bare or coated separately from the hull. Applying a zinc-rich coating to a bare prop before launch provides a sacrificial zinc layer that slows galvanic corrosion and makes it harder for barnacles to get a firm grip. It's also useful for touch-up on areas where antifouling paint has been abraded or damaged during the season.
For sacrificial zinc anodes to complement your corrosion protection system, browse our marine hardware selection. For other corrosion protection and specialty coatings, see our Paint & Coatings collection. For zinc film galvanizing for above-waterline ferrous metal, see the Seaguard Zincspray.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.