Search results for query: *

Here's one view, 12" roof overhang covered with 1/2"HC. More pics here: https://www.backyardchickens.com/articles/aarts-coop-page.65912/ It would help to see some pics of your build showing where it attaches to the GH, and other wide views.

Sounds like a good plan. Don't forget large roof overhangs with fascia to help block the winter winds.