Re: Bottom paint removal problem
I do wonder if there is much difference between soda and other dry materials. For what it's worth we had our hull cleaned with dry sand in the UK when the boat was 10 years old. The old paint was taken off within a few hours and the hull looked as though it had just come out of the mould. So perfect was the gelcoat that it needed a light abrasion before a couple of layers of clear epoxy were put on. In our case that was sufficient as we then put on Coppercoat, itself an epoxy.
Ian and Judy, Pen Azen, SM 302 Kilada, Greece
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> on behalf of Mark Pitt <mark_pitt@...>
Sent: 25 February 2020 19:28
To: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io>
Subject: [AmelYachtOwners] Bottom paint removal problem
I have owned my Super Maramu since she was launched in 2003. Amel applied a hard bottom paint before launch in 2003 but since then I have only used ablative paint. The layer is now thick and a bit uneven. Having carefully examined the words of caution on the Amel owners group, particularly those of Joel Potter, I have looked in vain for a soda blaster to remove all the old bottom paint. I just cannot find one in Rhode Island. The contractor recommended by my Rhode Island marina uses glass and is apparently very experienced with blasting boat bottoms.
Last week I contacted the large Hinckley repair yard in Portsmouth, RI and it turns out that they do not have access to soda blasting either and use the same glass blasting contractor used by the full service marina where Sabbatical III is stored. Hinckley recommends the glass blasting followed by 5 coats of epoxy (the 5 coats is their rule for European boats). My yard has suggested 3 coats of epoxy as a water barrier.
I had been hoping for soda blasting plus a single coat of epoxy as a primer, on the assumption that the barrier coat under the gel coat would remain intact. I did not expect that it would not be possible to find a soda blasting contractor in Rhode Island (or nearby Massachusetts) who works on boat hulls.
Any suggestions for me? I feel stuck and am inclined to use glass blasting following by 3 or more coats of epoxy as a barrier coat.
“Sabbatical III”, SM#419, Wickford, Rhode Island, USA