Paint on Trimtabs

[NorCal]

I just had the trimtabs painted with anti-fouling paint and within 2 weeks it is already peeling off. I know that the yard sandblasted the trimtabs and used a primer. I had a similar experience with another boat that I owned previously. The paint would not stick to the stainless. Does anybody have any suggestions for my next haulout?

The boat is in the S.F. Bay area. Mostly salt with a little fresh water mixed in. There are zincs on the trimtabs.

Thanks for any advice.

 

[captstu]

I used PropGlide a few hundred miles ago. Prop and trim tabs look fine - the top of the tabs was painted with a barrier coat and bottom paint, it has some scum on it. The yard used a "small kit" and charged me $315 for the material and application.

 

[Cutwater28GG]

I went with barnacle barrier (same as the prop) not antifoul. I think the water flow is too turbulent for sloughing antifouling to stay attached for long.

pretty sure barnacle barrier was something like $15 and a lot cheaper than propspeed.

 

[NorCal]

I will try one of those next time. Thanks for the quick replies.

 

[knotflying]

I have also used cold galvanized paint. It has worked fine for me. Gansett Ranger used it and it held on well , but he still has some growth. I think any product is dependent on water temperature and salinity. It is all about what works best for you in your area.

 

[BB marine]

I have had good success with Pettit products. I painted all the underwater metal components last year. Trim tabs , swim platform support braces ,keel shoe, engine and marine air thru hulls ,rudder, and thruster gear housings. I used a three step application. Pettit 6455/044 Metal Primer, Then two coats 6627 Tie Coat Primer.There is an application time window to achieve a good adhesion between coats. Then I applied two coats Pettit bottom paint (Vivid Black). I had no paint peeling or chipping on any of the metal components after one season in the water and slightly over 1000 miles of cruising. The only paint loss was the rudder where the prop wash or cavitation had eroded the paint away.

This is starboard after a redcoat this year. The only reason for repainting was I made a wider Drop fin and repainted to match.


This is the rudder with wear from I believe cavitation.