Balance the joints between stained tiles will certainly clean an unsightly surface tile, but it is a long process. If strong dilutions of Lye won't do the trick, however, you will have to resort to scraping the grout or glue between joints and balance. If you are going to remove the tile altogether and want to remove the adhesive and grout from each tile, you need a sharp razor and a little patience.
Instructions
Joint balancing
• Scrape in the areas between the tiles with a grout to remove the tool with a tungsten-tipped blade. Wear gloves and safety goggles to avoid injury to the tool or to fly loose debris. Do not use excessive force; You can scratch the mosaic you're trying to rejuvenate.
• Clean the bits of grout, adhesive and dust from your work area with a clean, dry brush. If a large area is arranged, make sure it is well ventilated to remove dust and use a mask to protect against fine particulate inhalation.
• Remove any mold from stains with a 10 percent bleach solution before joint balancing. Wear rubber gloves when handling bleach.
Remove Tiles
• Weaken from tiles with a hammer and chisel so that the tile will wiggle slightly. Insert a thick, sticky knife under the tile and move back and forth to loosen grout. Use the knife to lift the first shingle as if it were a lever. If it doesn't look seethe, try to scrape and ripple more behind the shingle, but don't force the tile away too hard; The knife could bend or break.
• Work methodically through the tiled surface, with the edges freed from the removal of the first tile as a starting point.
• Scrape grout and adhesive from sides and back of tiles with a scalpel or sharp knife tool. Always scrape away from your body to avoid injury when the razor suddenly gives as a piece of grout or adhesive comes loose.
• Apply Muriatic acid to the back of the tiles to loosen grout or glue. Wear gloves and goggles and apply only to the stubborn grout piece with a rag dampened with muriatic acid to be pulled, as the acid will inevitably eat the rag. Cover nearby surfaces with thick plastic. Allow the acid to work in the grout for about 20 minutes and then scrape with the razor. Rinse thoroughly with water and then with a base solution--one part sodium bicarbonate by four parts water works well--to avoid long-term damage to acid tiles.