Make sure that you select the hollow option when using the cube.
Unreal engine 4 roof.
Unreal engine is the world s most open and advanced real time 3d creation platform for photoreal visuals and immersive experiences.
The first thing you need to do when making a building on unreal engine is to delete the default stage you receive.
After deleting the default stage you will want to go into your bsp folder select a cube and drag it out into your game.