This is one way to sign roof, if you are referring to a building with a pointed roof. For other types of roofs, you should sign them more similarly to the way they look.
Kitchen | Bedroom | Bathroom | Living Room | Dining Room | Garage | Basement | Hallway | Stairs | Window | Door | Roof | Wall | Floor | House
Learn more signs on our regularly updated ASL page! As you're picking up sign language, try using Ava for more meaningful conversations with Deaf and hard-of-hearing people.