Matt (Staff) (12/12/2012)

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Hi Fred,

Maybe product names and descriptions differ from region to region but as far as I'm aware, it's just as conventional to refer to an epoxy or vinylester 'gelcoat' as it is a polyester gelcoat. Of course polyester gelcoats are far more common in the wider composites industry because the bulk of what's getting made is still 'bucket and brush' polyester resin and glass so if someone just says 'gelcoat' out of context then my guess would be that they mean polyester but without asking it could certainly be vinylester or epoxy, particuarly if it's a tooling gelcoat (epoxy gelcoats for parts are very rare).

From a health point of view I think I'd rather spray epoxy than polyester but yes, epoxies are thicker and epoxy tooling gels are thicker yet and so would almost always be brushed or rollered.

--Matt