Small blisters

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Posted by Richards Stock on February 14, 2005 at 07:10:07:

Posted by Richard Stock on June 16, 2004 at 14:48:01:
I recently slipped my boat for the first time in two years (it is kept in Cardiff Bay Wales which is now a fresh water area seperated from the sea with a barrage). On the Starboard side of the hull there were 5 blisters ranging from the size of a small coin to the size of a large coin, when pierced they smelt of acetic type acid and released small amount of liquid, there are no blisters on the port side but a moisture meter shows levels of up to 20% in areas on both sides of the hull. I ground the blisters out abnd filled them with epoxy and relaunched after antifouling. It also appeared that when I was stripping the antifouling off that there was a coat of VC tar between the gelcoat and the antifouling, in some places this was clearly holding moisture between the paint layers!
My question is should I be vcarrying out a large repair or should I allow the problem to progress before attempting repair?
Th boat is a Newbridge, Virgo voyager built in 1989

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