
Today I went to my local hobby shop and bought some foam board, I paid for a piece of 50 x 70 centimeters, 3 mm thick, about 9 Euro what was cheaper than I tought. Then I had to help a friend of mine who is moving this week.
When I came home I started to build my first ruined building and I was surprised how fast the built was, it took less than 20 minutes, but I think that I will spend some more time on detailing.
I am satisfied with this first try and I have to thank all the guys at the Australian online shop "Battlebunker" who made all these great videos which are a great inspiration for me.
Another homepage which I found some time ago features the building of foam board houses too.