[C320-list] What can I do to my bottom?

[david.allred at verizon.net]

 I had my 2000 320 soda blasted four years ago by Osprey Marine Composites at Herrington Harbour North in Deale, MD.  At the time I arranged for the work, I was told that a barrier coat was not necessary since I had no evidence of blistering.  When I went to pay the bill, the same gentleman suggested a barrier coat, but not very strongly.  When I told him he had earlier said it was unnecessary, he said it probably wasn't needed.  I decided not to do it based on my history of no blisters and the vinyl ester layup.  I have seen no evidence of blistering.
David Allred

 2000 C320 #712 Romance

 Herring Bay, MD

-----Original Message-----
From: Warren Updike <wupdike at hotmail.com>
To: C320-List <C320-List at Catalina320.com>
Sent: Thu, Mar 30, 2017 1:54 pm
Subject: [C320-list] What can I do to my bottom?

I hope the subject got your attention.
Two of us recently has our bottoms soda blasted. The question is: whether to barrier coat or not. The Pettit rep strongly advised to do so claiming that without, eventually water would get to the gel coat and find places to infiltrate into the hull, possibly causing blisters. However, my bottom was never barrier coated and in 22 years of only paint, I have found no blisters.

What does anyone think about the issue? What have you done and what results have you seen?

Warren and Pattie Updike
1994 C320 "Warr de Mar" #62
Middle River, Chesapeake Bay