I removed some old (really disgusting state) carpet floor tiles from the kitchen. I want a really hardwearing replacement so I have thought of painting the floor. Utility trumps aestethics (spelling?) in this situation.
1. A few tiles were stuck down with (I guess) contact adhesive. The black backing on those few tiles came away form the tiles and is stuck to the floor in places. How do I remove this? Just scape, scrape, scrap with an old chisel? Do I remove the old backing and adhesive with a heat gun? Do I need to treat or sand these areas after I have removed the gunk?or the whole floor?
2. In a few small areas the top cement/mortar (sorry, can't think of correct word) skim has broken away and needs replacing. Do I make a mortar of 1:1 cement and sharp sand and smooth it down with a float trowel? Or some other mix? Do I apply PVA adhesive first to the exposed concrete on which I am going to skim? Can I fill small cracks and small imperfections with Tetrion (or similar) filler? A good adhering, hard-wearing finish is the most important result.
3. Does the cement, old and new, need any preparation before I paint it? Do I sand the floor with 40 grade "sanding" belts? Or prime it in some way?
4. Can I use any external render paint on the floor or something else? Colour isn't really important (although I fancy dark blue for some reason) as long as it is dark and resists staining.
Thanks for any help