Bob -- I have had a number of other fiberglass boats over the years that have lived for months in fresh water. I have never had a barrier coat on any of them, and I have never had a blistering problem. Are you saying that M-boats need a barrier coat as a matter of course? Do you tell new owners this? David David Hill M17 "Grouper" Message: 2 Date: Fri, 14 Oct 2005 17:17:45 -0700 From: "Robert Eeg" <bobeeg@earthlink.net> Subject: M_Boats: Gelcoat To: montgomery_boats@mailman.xmission.com Message-ID: <410-220051061501745906@earthlink.net> Content-Type: text/plain; charset=US-ASCII Hi David Which barrier coat system do you have? And do you also have a bottom paint? (Over the barrier coat or over a bare bottom?) We recommend Interlux 2000E epoxy barrier coat (about $67 a gallon. One gallon should cover and protect the bottom) I've never heard of any blistering on the boats except yours. And some people here on the West Coast have their boat in the water all year long. Small blisters can be sanded flush and when the hull is prepared properly you can roll on the Interlux barrier coat. ( 2000E). This is a bullet proof epoxy that lasts forever. It will prevent any problems from occuring. Fair winds Bob Robert Eeg bobeeg@earthlink.net Why Wait? Move to EarthLink.