I’d suggest posting the template and/or a savegame with the problem in this thread:
http://discourse.stonehearth.net/t/a16-the-buildings-my-hearthlings-will-not-build-round-2/22200/17
Building issues are very tricky so just trying to replicate the same template with the same approximate roof size won’t do it – they need to know EXACTLY what you were doing.