So far in the game, there isn't really a specific build that allows the player to cover the gap on the side of the peaked rooves where the walls would be. I tried normal walls but that didn't cover the gap, unless it's a grass wall. Triangle walls don't work well since parts of the blueprint intersect with the walls next to it. Lastly, I tried half walls, but the corners of the wall sticks out above the peak. With all those in mind, I think it would be a good idea to add a triangular wall that would fit better for that gap in the peaks, so that way it can look more aesthetically pleasing on our builds.