Again, I've only very little experience and doing another job for a friend. I've never cleaned these types of slabs before, they look like they have a textured surface. I have a few questions. 1. If necessary is hypo safe for use on these slabs? 2. Are any detergents/cleaners recommended? 3. Would the turbo nozzle be safe or would I be better using one of the more angled tips? They asked if I would repair the joints. I haven't made my mind up about that yet. Large areas of the joints look fine. If I were to do it, would I have to remove it all? Or would patching it up be possible/sufficient?