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Reply to: How common is delamination in older catamarans?

[quote=dmgbear55]I should have added another serious cause of delamination comes from moisture in the core freezing. So a boat that has a damp core can and will delaminate when it suffers freezing. Moisture inside the hull can create extraordinarily high humidity and if the hull is sealed up will essentially pressurize that humidity and begin forcing it into the core. So storing the boat with dry hulls and the drain plugs pulled may go a long way to stopping delamination of a cored hull. When I wrote my post I was thinking more in terms of the actual glass layer(s) separating and not about the separation of the layers of glass from the core. I should know better since I am just about finished up fixing a J30 with wet balsa core. This freezing core problem greatly affects balsa (or any kind of damp core) core boats in the colder climates to the extent that it can be the cause of retirement of the boat. This problem can be repaired, but it requires a fair bit of work.[/quote]

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