Pettit Hydrocoat Antifouling Bottom Paint
Pettit Z-Spar Pettit Z-Spar
  • Pettit Hydrocoat Antifouling Bottom Paint
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Pettit Hydrocoat Antifouling Bottom Paint

Pettit Hydrocoat is an easy to apply ablative antifouling paint with a smooth finish for performance. This water based bottom paint complies with air pollution VOC regulations so it is environmentally friendly and safe to use and offers multiple season protection with the benefits of ease of application, minimal odor and quick cleanup using water. When properly applied, this paint will withstand frequent trailering, beaching and launching.
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$64.99 / qt
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Tech Spec Product Info User Generated Content
Hydrocoat contains drag reducing PTFE and dries to an easily burnished slick film for maximum hull speed. Plus, the controlled erosion of ablative paints reduces coating buildup while the loading of cuprous oxide content combats marine growth in highly fouling waters. Thus, a hull which uses Hydrocoat should only require a simple pressure wash upon haul out to remove growth and prepare the hull for recoating and launching.


Hydrocoat contains cuprous oxide. As a result, there is a tendency for settling to occur, especially if the paint has been on the shelf for several months. It is necessary to thoroughly mix the paint before using. If possible, shake the can of paint on a mechanical paint shaker. Before using, check the sides and bottom of the can to make sure all the pigment has been mixed in. If mixing is going to be done with a wooden paddle or an electric drill mixer, pour off half of the liquid from the top of the can into another can and then properly mix in any settled pigment; then remix the two parts together thoroughly. Adhere to all application instructions, precautions, conditions, and limitations to obtain optimum performance. Refer to individual labels and tech sheets for detailed instructions when using associated products, etc. When spraying, do not thin Hydrocoat more than 10% (12 ounces per gallon) or inadequate paint film thickness will occur and premature erosion of the finish will be likely.


Coating performance, in general, is proportional to the degree of surface preparation. Follow recommendations carefully, avoiding shortcuts. Inadequate preparation of surfaces will virtually assure inadequate coating performance.


No antifouling paint can be effective under all conditions of exposure. Man made pollution and natural occurrences can adversely affect antifouling paint performance. Extreme hot and cold water temperatures, silt, dirt, oil, brackish water and even electrolysis can ruin an antifouling paint. Therefore, we strongly suggest that the bottom of the boat be checked regularly to make sure it is clean and that no growth is occurring. Lightly scrub the bottom with a sponge or very soft brush to remove anything from the antifouling paint surface. Scrubbing is particularly important with boats that are idle for extended periods of time. The self-cleaning nature of the coating is most effective when the boat is used periodically. Burnishing of the surface to create a slicker finish should be done with 400-600 grit wet-or-dry paper after the coating has dried for seven (7) days.

There is no maximum drying time before launching.

Dry Time at Substrate Temperature  To Touch  To Recoat  To Launch 
90°F  1/4 hour  1.5 hours  12 hours 
70°F  1/2 hour  3 hours  16 hours 
50°F  1 hour  6 hours  48 hours 


  • Finish: Flat
  • Curing Mechanism: Solvent Release
  • Solids (theoretical): Weight- 73 +- 2%, Volume- 40 +- 2%
  • Coverage: 430 sq. ft./gal.
  • VOC: 150 g/l max. (1.25 lbs/gal)
  • Flash Point: None
  • Application Method: Brush, roller, airless or conventional spray.
  • Number of Coats: 2 minimum with additional coat at waterline recommended.
  • Dry Film Thickness per Coat: 1.5 mils (3.75 wet mils)
  • Application Temp: 50Deg F. Min., 90Deg F. Max.
  • Application Humidity: 0% Min., 85% Max.


BRAND: Pettit Z-Spar
Number Of Parts: One Part
Type: Copper AF Paint
4.3 46

love the stuff


can roll or spray


fredericksburg va


Very good protection for northern Chesapeake.


Coverage is good.


Worton Creek, Md


Be careful when changing to Hydrocoat !!!


Started using it over power washed Micron csc when it first came out. End of season results are large size pieces peeling off. I sanded bottom down last year again then power washed and still peels. Boat kept in partial brackish water but mostly salt in Bpt harbor. Sorry i ever started using.


c t


Great product


Was verybeadybto apply and clean up was do easy ... Just dos and water

Kevin g

New Bern nc


Hydrocoat paint


This is the second time using this paint. We boat on the Chesapeake Bay. Boats around us in the marina have a slime build up along the water line. We don't!!! Lasted 2 seasons. This year I spent about 15 hours sanding the bottom, wiping down and applied 2 coats. We'll be good for 2 years. I also use it on my props, shafts and rudders. Had a diver on it half way thru the season. We had less build up than our neighbors who used the zinc paint.

Celtic Dream

Tracy's Landing, Md.


First Time User


This was my first time using a water-based paint and an ablative paint. I had always used Petit Trindad. Hydrocoat was easy to apply and the clean-up was a breeze. The only problem I encountered was with the shipment. Although the box was clearly marked with the correct side up, somewhere in shipment, it was turned over. I discovered about 3/4 gal of drying paint in the bottom of the shipping box when I opened it to paint. JD refunded the price of one gal but I had to quickly drive to West Marine and buy another gal of Hydrocoat for $40 more! Not happy about that.


Hampton, VA


Excellent Product !


Bottom painting a boat is never fun -- but this takes a lot of the mess out of it.


Vancouver, WA


Very pleased with this bottom paint


Used many years ago and found it to be a good product. Use on racing sailboat. Can be polished and with good preparation is a fast finish. Went to traditional ablative paints and did not have as good a results. Went back to it this past season and had minimal growth in a very high growth area and was able to keep the bottom clean and fast with minimal effort.


Quincy Bay, MA


Mediocre results.


Some of the comments are too basic here. Such as reduces build up! Well, yes all ablative paints are, that's the point. Hyrdocoat is easy enough to apply I give you that. But be careful as once you apply a water based paint, you can not switch to other ablatives such as Micron 66 or Ultima SR. After a season of using the paint I've noticed that the surface had way too much slime and dirt. It took a long time with a powerwasher to clean it. Once it was cleaned the paint revealed a very dull color that had algee like green patches. Originally, I decided to use the paint for environmental concerns. That said if it doesn't function then I don't have much use for it. Over the years I used Ultima SR 60 and Micron 66. Out of those Micron had the best result in NYC area where I keep the boat. I wanted to apply Micron after Hydrocoat trial last year, but I realized I can not. Do yourself a favor, if you have a large vessel apply expensive paint and you'll get at least two seasons instead of one and it will end up being the same if not cheaper in cost comparison. If you have a daysailor, or a boat that you can haul out and wash from time to time then great use Hydrocoat. For all others, I would encourage you to be more cautious.

Sail or die

New York, NY


I won't use it again


To other comments - looks great when applied, applies easily and easy clean up. I keep the boat downstream from a sewage treatment plant. Hi growth, brackish area. The area a bottom paint manufacturer must hate. The product hands down is the worst protection I have yet encountered. ALL others I have used have been better! AWFUL slime, buildup AND barnacle protection. Their zinc spray works great - the Hydrocoat - awful. My diver said the same (had to clean it twice!) - said another boat with Hydrocoat equally bad. Out of the water - it looks pretty good again - post power wash and had scraping of barnacles...


East Greenwich RI


Pettit Hydrocoat Antifouling Bottom Paint



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