How is this done? Is it possible without machinery ie a sledgehammer? I might have to tackle a 60's outhouse soon, built with a cast in situ concrete roof and single skin walls. I'm sure I've seen a video somewhere of someone nearly dying whilst tackling one of these, or they caved the roof in and it took the walls with it. . . Any ideas? Or am I best leaving it to the professionals with a digger etc?
