Barrier Paint, anti fouling paint

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Sep 11, 2004
43
- - kamloops bc canada
I just bought a 1988 Capri 22 and I plan to moore this boat in fresh water. The instructions tell me to apply a Barrier coat as well as anti fouling paint. It appears the boat already has a coat of anti fouling paint, however, how can I tell if there was a barrier coat applied? thanks Bill
 
Jun 16, 2004
130
Catalina 30 Mk1 Horseshoe Bay, BC
Hi there...

congrats on your new boat! Ask the previous owner what type of paint he used so you can find one that is compatible. Then a light sand and new paint (but check the instructions on your type of paint you buy). You may not need a barrier coat at all. Cheers, Rob
 
F

Frankco

Use a Barrier coat

It hauled my have just hauled ny capri 26. A barrier coat which had a barrier coat applied to the hull when new. It has not gotten even one hull blister. The wing keel was not painted with this system and there are hundreds of blisters. It took me about an hour to sand off the existing epoxy with a random orbital sander(make sure you where a mask and do it outdoors with coveralls) then with a clean surface apply the barrier coat. Even though the boat has been previously painted with epoxy it does not have the overlapping plates which are contained in the barrier coat. Interlux says to use an etching primer but since you will be sanding the boat this will in itself give you a good surface to apply without it. Blistering is more prevalent in fresh water than salt. Doing this will give you the option of using an ablative paint which I have found to be superior where there is high vegetation growth. One other reason I recommend this over epoxy is you will know when to repaint when the color dissolves away. There is also no buildup of paint. Just a light sanding is needed to remove any loose paint and you will be ready to repaint it. I have owned my boat since 1996. I work for University sailing center at pine harbor marina which is a full service marina and have painted many boats and have used both epoxy and ablative but I would not put ablative on without a barrier coat since it is more periable than epoxy based paint. I have also worked for two paint manufactures and have a lot of knowledge about paint.Some will tell you a barrier coat is only good on a new hull I do not agree Just make sure your boat has dried out for a couple of days before applying.
 

Bilbo

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Aug 29, 2005
1,265
Catalina 22 Ohio
Barrier coat

Hi, I hae a C22 with a barrier coat. I know this because I have the bill of sales from the original owner two people back and because I cleaned the anti-fouling paint off down to the epoxy barrier coat. This coat has some thickness to it and was painted up to the factory waterline which is about an inch below the bootstripe. The anti-fouling paint does not act as a barrier coat. It is somewhat porus. One issue with my boat is that the boat sitting at the dock does not sit at the waterline that comes from the factory. It would if it didn't have the weight of a 6 Hp 2 cycl, a battery and the 3 1/2 gal. gas tank in the stern. Because of this there are some small blisters on the stern areas where the hull gelcoat is in constant contact with the water. With that added weight, I need to add to the height of the barrier coat up to a line at the lower gudgeon of the rudder on the stern and forwards along the chines below the bootstripe.
 
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