What would make a good roof?

[tadpole]

I just finished spawning all the walls for my custom maze, but the problem is i need roofs now to cover it all up. My walls are about 20 meters high and range from 5-50 meters away from each other, I cant think of a object that would make a good roof, so if you have got a good idea, please post =D

Ty in advance,
Tadpole

[TheSpidey]

You can use tables for this

[Stys]

Remember, you can also use .go scale () to modify the size of the roof.