Larian Studios Forums Divinity: Original Sin 2 - The Modding Dungeon Divinity - Original Sin 2 - Modding Troubleshooting Is there some trick to interior walls?

I am struggling to make cohesive interior walls for my buildings. When I try and drag the wall pieces to make individual rooms, I always end up with pieces of wall sticking out of the borders or overlapping wall pieces.

What is the best method for building interior walls for buildings? I need some separate rooms!