Thanks,Henry, for the reply. I would not want to take off all that bottom paint. the first go around was enough of that! Tom B On Mon, May 25, 2015 at 11:54 AM, Henry Rodriguez <heinzir@gmail.com> wrote:
I wouldn't worry about it. The boat has survived all these years without getting any blisters. Chiquita has lived on a mooring for over 35 years with no sign of blistering, and Macgregor/Ventures aren't exactly known for the quality of their fiberglass. My 1979 M17 will also live on the mooring for at least a month each summer and I am not adding any blister protection although I did use Aluthane as a primer under the bottom paint, mostly because I had some left over from the trailer projects.
My boats are fresh water boats but I don't think fresh or salt water makes a difference in blistering. It is a function of porosity of the gel coat, I believe. Fouling is another matter entirely. Your anti-fouling paint should protect you there. Don't lose any sleep over not applying a barrier coat.
Henry M17 Monita V23 Chiquita
On Mon, May 25, 2015 at 10:41 AM, Thomas Buzzi <thomaspbuzzi@gmail.com> wrote:
Recently cleaned off the old bottom paint from my M17. Got down to the gelcoat which had a waxy sheen to it. Lightly sanded the sheen and applied two coats of bottom paint directly to the gelcoat. The boat is 35 years old plus, had no sign of 2000e barrier coat and had no evidence of blistering. Am I in trouble for not applying a coat of 2000e before the bottom paint? My plan was to use the boat off the trailer with the hull being wet for no longer than a week at a time and mostly day sailing. If I do decide to moor the boat at a marina though would blistering become a problem? I had an M17 back in early 1980's which was a 1974 model and that did not show any signs of blistering either even though I had it at a marina for over a year at a time.
Tom B, M17, "AS IS"
-- Henry https://picasaweb.google.com/heinzir