Re: Does Antifouling Help Prevent Hydrolysis


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Posted by B.B. on February 14, 2005 at 04:30:38:

In Reply to: Does Antifouling Help Prevent Hydrolysis posted by Fin on February 14, 2005 at 04:28:15:

Posted by B. Blomberg on April 27, 2003 at 09:31:38:
In Reply to: Does Antifouling Help Prevent Hydrolysis posted by Fin on April 24, 2003 at 20:01:35:
Hello Fin!
As I have mentioned many times here, excess water entrance in the laminate does not cause the hydrolysis!!! It is the hydrolysis which causes cavities and delaminations where water can enter and cause the high moisture readings.
If the causes for hydrolysis exist in the laminate, there are no products which can be applied to prevent it.
If your hull will hydrolyse or not is not possible to tell as it has probably dried sufficiently between the launching periods to make it impossible to detect any eventuell such process.
If you will now keep your boat launched for a longer time and the laminate contains any amount of uncured polyester enclosures and there are some what I call "trigger" enclosures you will probably find some blisters when taking it up.
If there are no "triggers" it will probably never have any hydrolysis problems.
However I recommend applying antifouling in order to keep the bottom clean for the period you mention.
Regards Bengt


: Posted by Fin on April 24, 2003 at 20:01:35:
: Have another question for you. I have the 13 yr old 20ft fibreglass. Has not been kept in water for 7 yrs. Will be keeping it in water this season (fresh water for 5 or 6 months). Bottom has never been painted. Will painting the botton with antifouling help prevent hydrolysis? I know it will help prevent growth and staining, but cannot get a straight answer about hydrolysis prevention. I have been told, if I am not worried about the growth, but just hydrolysis, to only put on a couple coats of a good wax. Is this right?




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