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Byterbit View Drop Down
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    Posted: 28 Jul 2014 at 11:40am

  I repaired my polyester keel bottom with an epoxy resin and glass patch. (about a square foot). During the patch work I sanded off  the gelcoat  for the patch down to the original fiberglass. I left about 1 inch of gelcoat around the patch which I’ve de-waxed with Interlux 202. I’ve  used  an epoxy resin adhesive from another manufacturer which I was told was waterproof,  to wet my glass patches.   Nonetheless I’m about to apply Interlux Interprotect 2000e as the outside  bottom layer, just to be sure of a waterproof bottom.

A few questions.

1) Generally speaking am I on the right track ?

 

I read in Interlux literature that an undercoat of epoxy resin should be used prior to the application of the 2000e barrier coat.

2) Assuming I was correctly told the alternative epoxy resin was  water proof does it properly substitute for Interlux Epiglass in this ?

 

  I am concerned about the “interface” between the old and the new. As the epoxy is sticking well to the old de-waxed gelcoat  in my tests,  my thought is to epoxy over the inch border of gelcoat and then paint over this with the 2000e, thus making a waterproof border and seal around the painted patch.

3) Am I right in doing it this way ?

4) How waterproof is 2000e generally  ? It seems mostly used over gelcoat. Is it enough here or should I consider using gelcoat on top of the patch and then paint ? I’ve read that gelcoat can stick to epoxy.

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