
Old thread, but Im considering the same project with my 3:12 shingled 16x80.. But I want to add attic insulation, and have at least a 18"-24" overhang..
I don't think bolting 3:12 ladders to the top plate is going to be strong enough, but sure would be easier..
Im thinking I need two 10' 2x4's screwed to the tops of each truss to hang over 2' with hurricane straps securing them all to the top plate.. All doable, but keeping everything square and on 16" centers is my main concern, but how do you measure from a 80' string line?