John the tin roof is made from aluminum foil. I fold the foil over a file and rub it with a piece of balsa or some of the pink foam. I then cut it into strips and glue on with white glue. I painted it with acrylic paint the kind you find in craft stores. I used a base of grey then a wash of burnt sienna to give it the rusted look.
Tyson if it was only possible I would make LBS out of cardboard but don't know how to yet.
Thanks for all the kind remarks folks.
I have just finished this little freight shed. As you can see I have a lot to do still like painting the track and adding ballast. The track is z scale which is close to the three foot narrow gauge and is known as Nn3