Unfortunately it seems none of the roof textures line up with the model roof ( including the bumpmap ). Default textures just so you know it wasn't me messing up :) I'm hoping it's just a case of shifting them along a bit, but I'm not sure many people will want to delve into normal maps.
Edit: hm, well. Can't get everything lined up with edges; I'm not really sure what the intention was for those hard lines?