new bottom paint, new barnacles, new headache

new bottom paint, new barnacles, new headache

Post by Travele » Fri, 19 Oct 2001 06:05:46


Recently did a bottom job with a name brand with (off name brand, but name
brand never the less) antifouling paint that included 70% cuprous oxide.
Yes 70%.  (no this was not Pettit).  With in 3 months, there where many,
many small barnacles evenly covered on the bottom of the boat.  It was my
understanding that this paint should have lasted at least a year.  The boat
is 30' fin keeled and I used well over a gallon of well mixed paint.  The
boat was put into the water about two weeks after the paint job.  Many of
the barnacles don't seem to be holding on very securely as they can be
easily removed, but some are considerably more stubborn.  Any comments??
Any similar experiences.

Bumfungled
dabnabit

Traveler

 
 
 

new bottom paint, new barnacles, new headache

Post by Vaugh » Fri, 19 Oct 2001 07:19:01

Hard paint or ablative?  If hard paint, you let it go dry too long. If
ablative, have you been using the boat?  Ablative needs to be refreshed to
expose new biocide. If it just sits in the slip, the ablative won't be worn
off and new biocide won't come out.  More info on type, your location, and
usage of boat.


Quote:
> Recently did a bottom job with a name brand with (off name brand, but name
> brand never the less) antifouling paint that included 70% cuprous oxide.
> Yes 70%.  (no this was not Pettit).  With in 3 months, there where many,
> many small barnacles evenly covered on the bottom of the boat.  It was my
> understanding that this paint should have lasted at least a year.  The
boat
> is 30' fin keeled and I used well over a gallon of well mixed paint.  The
> boat was put into the water about two weeks after the paint job.  Many of
> the barnacles don't seem to be holding on very securely as they can be
> easily removed, but some are considerably more stubborn.  Any comments??
> Any similar experiences.

> Bumfungled
> dabnabit

> Traveler


 
 
 

new bottom paint, new barnacles, new headache

Post by LaBomba1 » Fri, 19 Oct 2001 12:49:28

Quote:
>Subject: new bottom paint, new barnacles, new headache
>From: "Traveler"
>Recently did a bottom job with a name brand with (off name brand, but name
>brand never the less) antifouling paint that included 70% cuprous oxide.
>Yes 70%.  (no this was not Pettit).  With in 3 months, there where many,
>many small barnacles evenly covered on the bottom of the boat.  It was my
>understanding that this paint should have lasted at least a year.  The boat
>is 30' fin keeled and I used well over a gallon of well mixed paint.  The
>boat was put into the water about two weeks after the paint job.  Many of
>the barnacles don't seem to be holding on very securely as they can be
>easily removed, but some are considerably more stubborn.  Any comments??
>Any similar experiences.

Was it an ablative type paint by any chance?

                                Capt. Bill

 
 
 

new bottom paint, new barnacles, new headache

Post by Doug Dotso » Fri, 19 Oct 2001 22:21:12

I think the paint I last used specified that the boat should be put
into the water within 72 hours of the last coat. Otherwise some
component of the antifouling agent outgasses. The directions
generally specify a max time to launch. Perhaps you missed it.

doug

Quote:

> Hard paint or ablative?  If hard paint, you let it go dry too long. If
> ablative, have you been using the boat?  Ablative needs to be refreshed to
> expose new biocide. If it just sits in the slip, the ablative won't be worn
> off and new biocide won't come out.  More info on type, your location, and
> usage of boat.



> > Recently did a bottom job with a name brand with (off name brand, but name
> > brand never the less) antifouling paint that included 70% cuprous oxide.
> > Yes 70%.  (no this was not Pettit).  With in 3 months, there where many,
> > many small barnacles evenly covered on the bottom of the boat.  It was my
> > understanding that this paint should have lasted at least a year.  The
> boat
> > is 30' fin keeled and I used well over a gallon of well mixed paint.  The
> > boat was put into the water about two weeks after the paint job.  Many of
> > the barnacles don't seem to be holding on very securely as they can be
> > easily removed, but some are considerably more stubborn.  Any comments??
> > Any similar experiences.

> > Bumfungled
> > dabnabit

> > Traveler

 
 
 

new bottom paint, new barnacles, new headache

Post by Travele » Sat, 20 Oct 2001 04:04:47

Thanks for the comments.

Traveler