58186Re: [bolger] Polyester resin questions
- Jul 25, 2008As 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.
---- 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.
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