jack wrote:
To answer your question, re-applying gravel will help. Don't walk
directly on the roof - use wide boards to spread your weight as you
maneuver to the area you want to re-seeding.


what is used to make the new marble/rock crush adhere to the dried
surface? epoxy?

When the tar gets hot, it get sticky.

I guess, if you want, you can glue each pebble in place. Epoxy is good.