Join Date: Feb 2000
Location: Annapolis, Md
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Best way to remove barrier coat
Sanding an older boat to the extent necessary to remove the barrier coat is a really bad idea. That kind of sanding produces a lot of heat which can trigger a break down of the resins deeper in the laminate. This provides a mechanism for deeper blisters and delamination to occur. Barrier coats provide not assistance in preventing this kind of blistering.