Another prep detail that I needed to get done before the tile guy came in was the beginning of the stairs and the newel post. Typically the treads would carry on to the open edge but the outer edge on this one was done in a quick and dirty fashion with a sloping knee wall. The old newel post was really floppy as it was screwed only to the very short end of the knee wall which was only attached with a couple of Ramset nails to the concrete slab. I puled the drywall and re-braced the knee wall with some diagonals attached with 3 inch screws and few more Ramset nails in to the slab. Then after re-drywalling and a fair bit of fiddly trim work to get the first riser tied in tight across the front of the stair stringers and provide a solid side brace for the knee wall, I drilled the concrete slab and put in a half inch thick threaded bolt bedded in epoxy to tie down the base of the newel post.