The foundation is cast plaster, but the rest of the structure is wood stained with my india ink and alcohol mixture. I first built the inside framing and assembled that on top of the foundation. Then I applied 1x10 boards with lots of cracks and distressing on the bottom. I left off a few boards here and there as well as parts of boards. The roof is framed and again covered with 1x10 stained boards with a few gaps to represent broken roof boards. I applied Campbell shingles over the roof boards leaving some missing around the roof gaps. I stained the shingles again with the "inkohol"then dry-brushed them with gray acrylic craft paint, and finished with gray chalk dust.
Once the barn is installed on my layout I will add weeds and debris around the base.
Just having fun :-)