[Alberg30] When to use polyester and not

[George Dinwiddie]

Greg,

I believe that Gougeon Brothers only makes epoxy.  I use Evercoat Boat 
Yard polyester resin.  It's cheap and works just fine.  For a finish 
coat, painting the resin with PVA causes it to cure all the way to the 
surface.  Polyester doesn't have the adhesive power of epoxy, so you 
always have to rough up the surface if you're going on top of resin 
that's fully cured.  The book This Old Boat (see 
http://www.alberg30.org/store/Amazon.html) has a good introduction for 
working with polyester.

Polyester has some advantages over epoxy.  It stands up to UV.  It's 
cheaper.  It's more forgiving of catalyst mixing errors.  Epoxy, on the 
other hand, is adhesive and more waterproof.

  - George

greg wrote:
> I am about to do some glass work and have always used the West Sys. I have
> wanted to try the polyester resins but can't find any dos and don'ts  regarding
> its use with existing or original construction. Any pointers.
> 
> Kindest Regards- Greg
-- 
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   Hope your road is a long one.                        George Dinwiddie
   May there be many summer mornings when,       gdinwiddie at alberg30.org
   with what pleasure, what joy,                 http://www.Alberg30.org
   you enter harbors you're seeing for the first time;
                                            from 'Ithaka' by C.P. Cavafy
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