I have done quite a bit of fiberglass work.  First how did this happen?
Was this hole drilled in there for some reason?  If so, clean real
good, and re-glass with a little fiber for support.  If this hole was
a result of damage, you must ensure you get the glass resin deep
in to any cracks.  Also ensure you add extra fiber on the under side
were it will not be in the way or seen.  Any original fiber in this area
has been damaged, and is useless.  If this area is needed for support,
you my be better off grinding out the dammaged area completely.
                                          ERic

Mark Erb wrote:

> I recently bought an 84 Westfalia with a 3 inch by 4 inch hole in the
> front section of the fiberglass top. Anyone have experience and advice
> with repairing the hole?
>
> I am a new member, thanks for any help,
> Mark
>
>