Steve, A little baring of the soul here. It was years ago before I knew as much as I do now. I wouldn't do it again.
Let me clarify that. Given the solid hull construction (non-cored) and the condition of the gelcoat and hull, the barrier coat was probably not necessary. Touche' did not have any active blisters. There were a couple but they had been competently repaired. Should have just faired the hull and painted. There was a lot of gelcoat "pox" near the water line which I ground out and repaired. Seeing the pox may have tilted me toward removing the gelcoat and applying a barrier code. However, if a barrier coat is necessary or recommended, removal of the gelcoat isn't a bad idea. Gelcoat has very little structural strength. Exposing the glass structure allows the barrier coat to better adhere. As it turned out, the contractor pretty much botched the entire bottom job. I had it redone a couple years later by another contractor who did an excellent job of fairing the hull and re-applying a barrier coat. Touche's bottom is in excellent condition now. Overall, a painful and expensive memory. Dennis C. Touche' 35-1 #83 Mandeville, LA On Tue, Apr 12, 2016 at 1:13 PM, Steve Thomas via CnC-List < cnc-list@cnc-list.com> wrote: > > ---- "Dennis C. via CnC-List" <cnc-list@cnc-list.com> wrote: > > <snip> > "First, after removing the gelcoat to have a barrier coat done, > I saw a very small vertical crack in the skin out coat > (matte coat just under the gelcoat)." > <snip> > > Dennis C. > Touche' 35-1 #83 > Mandeville, LA > > Why did you remove the gelcoat to put on a barrier coat? > I thought the idea was to prevent gelcoat blisters, not to > act as a gelcoat replacement. > > The PO stripped off the gelcoat on my 36 and it is now an awful mess. > There are big chunks coming off all over the place, both > on the lead of the keel, and on the fiberglass of the hull > and rudder. > The white interprotect is coming off with a thin grey layer next > to the hull, and carries a perfect impression of the glass > fibre underneath. There is also a fine sparkle to the surface > as if the underlying surface had been sandblasted, I don't > see any good way to fix it now, and I don't understand why > anyone would do that in the first place. > > Steve Thomas > C&C36 > Merritt Island, FL > > > _______________________________________________ > > This list is supported by the generous donations of our members. If you > like what we do, please help us pay for our costs by donating. All > Contributions are greatly appreciated! >
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