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58186Re: [bolger] Polyester resin questions

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  • David C.
    Jul 25, 2008
      As long as he is not relying on the resin as a load-bearing part of the structure, he should be OK.

      I bet you can get this stuff at a big box hardware store like Home Depot or Lowes. if not, a Googling of "polyester resin" should give you lots a places to buy.

      Yes . . . marine paint is overkill. Any exterior latex primer and paint will look fine. Lasts 10+ years on houses, doesn't it?

      Question . . . Why is he bothering to fiberglas the walls? A quality exterior plywood with a good finish, a coat of primer and two coats of exterior paint would do the job, without the mess and expense of the fiberlasing. I don't see what the fiberglas adds to the project.

      David C

      ---- Patrick Crockett <pcrockett@...> wrote:
      > A friend just asked me for advice about fiberglassing plywood for
      > replacing the sides on a horse trailer. I would think that polyester
      > would be a fine resin for this and less expensive than epoxy, but I
      > haven't used polyester for about 40 years.
      > I vaguely recall people saying polyester doesn't always stick well to
      > plywood. I had no such problem 40 years ago, but maybe I was lucky. Are
      > there issues or practices to be careful about to ensure adhesion? Does
      > it matter whether he uses plain old exterior fir or pine?
      > I know where to order gallons of epoxy but I don't know where to go for
      > polyester. When I was kid, my dad brought it home from somewhere --
      > never knew where. May have bought it at the place where they
      > manufactured Dolphin sailboats. Does anyone have links to sites for
      > purchase? Would West Marine or a local agricultural supply place be
      > sources? (Those are the places I go for trailer kits.)
      > Are there issues around formulation, like with epoxy where you can pay
      > more for non-blushing formulas?
      > Will any old paint do when he is done? I suggested latex porch paint, he
      > had been advised to go with a marine paing (a one part polyurethane, I
      > imagine), but that really seems like overkill to me.
      > Thanks for any help/advice.
      > Patrick
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