Re: [VACList] Gel Coat

["chyde" <chyde@xxxxxxxxxxxxxx>]

Gelcoat is typically used as surface material in the production of
Fiberglass Reinforced Plastic (FRP) components. It is sprayed or brushed
onto the mold before the glass fibers and resin (lay-up) are applied.
Gelcoat needs to cure for several hours before applying the lay-up,
otherwise the glass fibers will migrate to the mold surface of the gelcoat.
The color will be correct, however there will be a mottled abstract fiber
look to the surface when the part is removed from the mold. If you try to
apply gelcoat to an exterior surface (not using a mold) similar to painting,
you will require an additive to the gelcoat called "air dry". If you do not
use this additive the gelcoat will only dry to the tacky state.  In the
context of this discussion I believe that gelcoat is not the correct
material to be used for refinishing bathroom fixtures. Keep in mind that
many Boat Builders have begun to paint fresh gelcoated hulls at the factory.
There are a great many excellent two part Automotive paints out there that
are tougher than gelcoat, more resistant to UV's and will adhere to most
plastics. Color selection is much better as well. You will not be able to
use abrasive cleaners on them but you shouldn't be using them on gelcoated
surfaces either.
Just my .02 cents worth
Colin Hyde
57 Sovereign of the Road
59 Ambassador International