Every instance I've seen of having polyester resin exposed to sunlight has resulted it in checkering (shrinking and cracking) in a matter of weeks, at best. It is also not smooth flowing like varnish is. It is not clear, but has its own colors, which I personally find to be rather ugly.

> I'v heard that polyester resin is uv resistant. is this true? if so will
> it work to use it instead of epoxy and varnish over my deck?