My coop is 6x12' with external nesting boxes and about 14" overhang on each side with a 3/12 pitch. Like the other poster my coop is under a tree and I have to sweep debris off roof.
I think it depends what roofing material you plan on using. I believe any asphalt shingle requires at the...
I know this is an old thread... errr discussion.. but by far the simplest instruction on how to figure out pitch on a roof. Thank you. Building my coop now and this helped immensely!!!