On Jul 6, 3:32*pm, "
wrote:
I have a few foam gaps to fill. *I can apply superfil early on and let
it cure...or I can wait and apply while i am laying up with fiberglass
skin (w/vacuum, etc.) . which is better?

I suspect normal "cell" filling is done concurrent with fiberglassing,
but filling significant voids is done standalone (allowed to cure/then
sanded, prior to fiberglass)