To make my box profile sheets go farther I was going to cut them in half and use the underside as roofing also. On the underside is also some kind of metal I'm just concerned that it is weatherproof? As I have only 10 sheets 1 metre wide by cutting them in half I will now have 20 sheets 1 metre wide. Has anyone done this? I'm not concerned about aesthetics just about the practicalities and economy. I realise there will be a problem training the box profile sheets to the undersides. How would I make some kind of flashing for this?
