Actually, the "pin size blisters" may be more what some of us call gelcoat pox. Older C&C's were prone to gelcoat pox near the boot stripe/waterline area. The pox is pretty much limited to the gelcoat. I think C&C applied the gelcoat a bit too thick in this area.
I fixed Touche's pox and applied barrier coat in 2007. Despite the seemingly hundreds of pox spot, there were no blisters, none. No recurrence to date. They are primarily cosmetic and are fairly easily fixed. Here's a couple pics: https://drive.google.com/open?id=0B_sb5TfIENvsdlFYdGp0bnpjcTQ https://drive.google.com/open?id=0B_sb5TfIENvsU0IzdG5LQjUwczQ A couple hours with a right angle die grinder with cone shaped grinding stone followed by a few swipes of AwlFair or 3M Premium Putty and some time with a sander and they're fixed. Dennis C. Touche' 35-1 #83 Mandeville, LA On Sun, Jul 9, 2017 at 8:56 AM, Chris Hobson via CnC-List < cnc-list@cnc-list.com> wrote: > Clearly the blisters didn’t slow your ambition to fix her up and sail, I > appreciate your ambition. And that blisters were hiding so far under the > surface tells me that its something of a hidden problem. > > Thanks, > Chris > > > > On Jul 9, 2017, at 2:58 AM, T power <sv_invic...@outlook.com> wrote: > > I have a 1973 MKI . great boat. Solid hull. Last year when i bought it. I > sanded adout 4 layers of old bottom paint, found about 4 pin sized > blisters, had the rest of the paint removed by soda blasting. That reveled > a few thousand pin sized blisters. Some epoxy, lots of sanding. Followed by > barrier and bottom paint and it is good to go. > >
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