Bgreer5050 wrote:
What size of roll flashing would you recommend between the porch roof and
the siding on this elevation?

http://mropartner.com/frontelevation.htm



I don't know about "roll flashing". I am not familiar with
that term. I would use wall angle at that juncture. I like
to have mine custom made and I have it bent with 6" exposed
and 6" up the wall. Cover the wall side with Ice and water
shield sealing the felt or housewrap over the flashing. This
seals any nail holes that you have to make through the siding
and through the flashing.

--
Robert Allison
Rimshot, Inc.
Georgetown, TX