Pete, I saw your post in the Getting Started but figured my post is more appropriate here. Are you using foamcore? Also, just to verify as I get them mixed up, these are from paperterrain.com and not www.papermodels.at
? The paper they sent you, is it 110lb cardstock? Was it pre-cut?
TO, my buildings were purchased from http://www.paperterrain.com
. I am not using foamcore or any other support beneath what paperterrain states is "medium-weight cardstock". The buildings are not pre-cut, but most everything needed for a particular building is found on a single 8.5 by 11" piece of card stock; walls, floors, roofs, awnings, stairwells, etc.
Each building has a rubbled version a couple of centimeters smaller which the "parent" building slips right over. This allows you to remove the full building to reveal a "rubbled" version in its place when called for by game results, or in a pinch double your playing area by using the rubbled buildings as buildings unto themselves.
Everything is pretty straight forward with these model buildings. The middle eastern parapet roofs caused me trouble on the first one I constructed. After that they were all a breeze.