The slate tiles on our porch needed to be re set and re grouted. H chose today to start this little DIY project. Keep in mind we weren't actually home today, but were furniture shopping. He started at 10, stopped at 1130, and has been working for the past 2 hours. We are now to the re-concrete step, and as he left he said "wow, I'm going to need a lot more than I thought. When I asked I he had even the slightest idea how to smooth the concrete and re-lay the tiles, his response was "come on. I've watched this old house. How hard can it be?"