ATiles, a free script, really fast and easy to use! I strongly suggest you install and try it: you will be wondered for simplicity and speed with which can play your roofs. But not all, with this script you can easily build even floors, walls, fences .. a lot of things.
Modeling architectural profiles for ceilings (or roof) could be really boring! But from today you can do it easly thanks to a great script for 3ds Max… you just will need 2 seconds!