I can't help you with your roof problem unfortunately, but I'm curious about that building and the one next to it (because they look really good!). Are they row house created with lot adjuster or do they both sit on one lot? If yes, what do you play them as? Two different businesses? Or an apartment and a restaurant?
I still have no idea what post I originally saw, but Yandere helped me fix it! :D
Both those buildings are on the same lot, so no lot adjuster shenanigans. The one on the left will be a small restaurant when I finish it, and the one on the right is a clothing store. If I planned to make them owned businesses, I’d have made them on separate row house lots, but I’ve never been super into sim-owned businesses (probably b/c I micromanage everything and they get tedious, haha!) ¯\_(ツ)_/¯ (And thanks for the compliment, nonny!)