Bottom Sealant/Barrier Coat systems

Discussions about Cape Dory, Intrepid and Robinhood sailboats and how we use them. Got questions? Have answers? Provide them here.

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Skip Medeiros

Bottom Sealant/Barrier Coat systems

Post by Skip Medeiros »

I'm in the process of removing the bottom paint from my 1984 CD 33 in prep for sealing it. (At New York winter temps, paint removers seem not to be very helpful and I'mdoing the removal by scraping.)

I am reassessing my initial plan for using the Interlux Interprotect 2000E/2001E system. Feedback from my local chandler is that the local yards are transitioning away from the Interlux epoxy system to the 3M vinyl ester system because of the 3M's more tolerant period between successive coats.

Does anyone have experience or opinions about either the ease of application or the quality of the resulting water resistance for these two products?

Thanks for your input.

Skip Medeiros
1984 CD 33 Alosa
Hull 112
Mt. Sinai Harbor, Long Island, NY




medeiros@bnl.gov
Lee H. Hodsdon

Re: Bottom Sealant/Barrier Coat systems

Post by Lee H. Hodsdon »

Skip Medeiros wrote: I'm in the process of removing the bottom paint from my 1984 CD 33 in prep for sealing it. (At New York winter temps, paint removers seem not to be very helpful and I'mdoing the removal by scraping.)

I am reassessing my initial plan for using the Interlux Interprotect 2000E/2001E system. Feedback from my local chandler is that the local yards are transitioning away from the Interlux epoxy system to the 3M vinyl ester system because of the 3M's more tolerant period between successive coats.

Does anyone have experience or opinions about either the ease of application or the quality of the resulting water resistance for these two products?

Thanks for your input.

Skip Medeiros
1984 CD 33 Alosa
Hull 112
Mt. Sinai Harbor, Long Island, NY

Skip,

I coated the hull of my 25D two years ago using the Interlux 2000E product. I scraped the hull by hand (same reason, chilly here in NH), filled and faired any dings and applied the product as remommended. The end result was very high quality, and if I recall correctly applied over one long weekend. I know the inter coat times are critical but I do not remember any problems. After two years the hull still looks like new. Two years is certainly not a sufficient test period, at least the coating didn't fall off!

I have photos of the process which I can scan and e-mail if you would like.

Best of luck,

Lee



lhodsdon@nh.ultranet.com
zeida cecilia-mendez

Re: Bottom Sealant/Barrier Coat systems

Post by zeida cecilia-mendez »

Skip: Have you read about the "blue ooze" in the CD Web site? If not, find it and read it. Make sure your bottom does not have any of this taking place. since you talk about "sealing" your bottom, yes, it should be taken all the way down to the fiberglass, make sure she is totally dry, -take a moisture test- if she is, several coats of epoxy should really seal the glass. then you apply a REAL barrier coat... some yards sell you a very poor quality type barrier coat, which does nothing... and then, the antifouling paint. Then you should have a secure bottom for years to come. I am currently having that problem with my keel and rudder, both ooozing blue oily liquid resin thru many minute pinholes, and will have to wait until next year's haul-out to correct it. I have my boat in the water the entire year. Good luck.

Zeida
Bandolera II
Key Biscayne, FLA.


Skip Medeiros wrote: I'm in the process of removing the bottom paint from my 1984 CD 33 in prep for sealing it. (At New York winter temps, paint removers seem not to be very helpful and I'mdoing the removal by scraping.)

I am reassessing my initial plan for using the Interlux Interprotect 2000E/2001E system. Feedback from my local chandler is that the local yards are transitioning away from the Interlux epoxy system to the 3M vinyl ester system because of the 3M's more tolerant period between successive coats.

Does anyone have experience or opinions about either the ease of application or the quality of the resulting water resistance for these two products?

Thanks for your input.

Skip Medeiros
1984 CD 33 Alosa
Hull 112
Mt. Sinai Harbor, Long Island, NY



zcecil@ibm.net
Skip

Thanks for sharing your experience.

Post by Skip »

I'm keeping a keen eye, and nose, out for the "blue ooze". I have fond a small area of dry, evenly distributed blue which resembles bottom paint and does sand away. Any chance I've misidentified this?

Skip Medeiros wrote: Skip Medeiros
1984 CD 33 Alosa
Hull 112
Mt. Sinai Harbor, Long Island, NY



medeiros@bnl.gov
jerry

Re: Bottom Sealant/Barrier Coat systems

Post by jerry »

take a look at the replys i received to a Jan. 11, message; also, check out the replys i had to a Jan. 30 message on the cruisingworld.com message board (archive 40) & messages in reply to 'jim' on the same date;
i'm still leaning to use 'gluvit' as my barrier coat on out '81 CD 30 after a fall sand blasting; let us know how you weigh the alternatives



jljcm@nowonline.com
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