Using my random cut tile pattern, I have tiled the two sinking houses.
It was a bit fiddly tiling around the holes in the roofs, but it looks like it has turned out okay.
To complete the defensible terrain layout, I have added some barricades, a crate and a broken cart.
Loads of my grit mix has been glued down and when it has had enough time to dry, I will give it a heavy basecoat of something to seal it.