sand it a bit to scratch the glaze off....if its on a wall just paint it a counter you may want to poly....as well..
1) sand with a 80-120 grit sandpaper to get thru the glaze a little, unless the tiles look pretty ragged, then that finish is prob already worn thru 2) clean with a tsp type cleaner (avail from hardware store, looks like a mild carton) 3) if you dont do any thing else PLEASE PLEASE prime it with a decent problem solving primer ( zinzer 1.2.3 ? or whatever brand your local paint dept recomends) primer sticks, paint wears. they both have their jobs, dont skip one 4) paint with your fave colour in a highly washable 100% acrylic latex paint.
No ned of painting ! put colourful tiles over it ! Happy new tiles
If you are asking about painting over tiles on a wall in a particular room such as a bathroom, the answer is you can't. Wall tiles, like glass are a non-porous surface. Paint will only adhere to a porous surface (i.e., absorbent surface such as drywall, wood, canvas, etc.). However, if you are talking about painting a design on a tile(s) then the answer is yes you can. But in order to do this you will have to use a glass medium and apply it first before you can paint on the tile and then the tile will have to be cured with heat after wards. To do only a few tiles would be economical but to due a whole room of tiles it would cost a small fortune in both time and money. And yes, you can use epoxy paint but you need a well vented area as well as a mask and goggles to do it and it may not last very long on the tile.
I saw this done on a HGTV program. The tile on the walls was an ugly blue and they didn't have the $$$ to replace and tear out the old stuff so they painted it white with and epoxy type paint. It looked easy enough but I am sure the right rollers and such matter tons.
