On Brown's Mountain, my father and I built our house out of slab lumber. When the sawmill was busy, Mr. Pucket, the man who ran the rip saw, would give my Dad the slabs just to get them out of his way. Slabs are mostly bark, but there's enough good wood in them to use as flat boards, provided you don't want anything fancy. And since all we wanted were four walls and a roof to keep the wind off our backs and the rain off our heads, we were thankful.