i need to know if there are any ways to remove concrete that has already set, from tile
The 1 st 3 answers and you ll take the glaze off the tile too!!! The 4 th answer I don t know about even being in the tile business for 20 years I ve never used that acid.. You don t say if its cement/cement or the cement based thinset you use to put down the tile with.. If it is thinset then you can gently scrape off excess and wash it off with a couple washing .. There is grout haze removers and 1 that I ve used made by Hydroment called Remove that does work well GL
If the tiles are a really hard glaze then you could have them sand blasted there are plenty of businesses that can dry sand blast as long as the tiles are worth more than the cost of sand blasting
Hydrochloic acid to about a 4 parts water 1 part acid may do it. Test it on a piece or not seen tile first. Paint on with a brush first, leave for about 10 mins then wire brush of. Other name is spirits of salts. Commonly used as a flux for soldering galvanised iron. USE FACE MASK VISOR TYPE AND COMMERCIAL GRADE RUBBER GLOVES. Wear an old pair of overalls or old clothes. If the acid gets on them they are history. Thorougly hose off with cold water when finished
The product that is made for this that few people, even tile setters, know is Sulfamic Acid. This is available at Home Depot in the tile department. Its in a small yellow/orange plastic jar and is not caustic like other acids. It will remove thinsets andf grouts and is also great for general cleaning of tile.
You can buy Muric Acid, a weak form of Hydrochloric acid, at your local home improvement store. It should be in the same area as other solvents, such as acetone and mineral spirits, near the paint section. It is sold for this purpose. It should not harm the tile, but will dissolve concrete, grout, and your skin, so be careful with it. You should wear a respirator, long sleeves and pants, and have a lot of ventilation when using this product. You will need to rinse the area very well after you are done. Have baking soda on hand in case you spill any. It will inactivate the acid.
