Ceramic Floor Problem

[Frances L.]

According to my observation, for whatever reasons, the mortar between tiles was not used the right mixture installed …. in between the tiles, there is some mortar and sand above the connection between the tiles.
It catches dirty easy. I consulted with some contractors. They suggested replacement of the floor which I am ready for this costly solution or knife off the dried mixture of mortar above the tiles... time consuming.
I used Oreck Orbiter Multi Purpose Floor Machine to scrub the floor a few times. The outcome was not so promising. .
There is big area to work on (12*13 sq fts). Some time it really bothers me. I am seeking better solution.
http://www.amazon.com/Oreck-Orbiter-Multi-Purpose-Machine/product-revi ews/B004ZP4B60
Any suggestion ?
Thank you for your advice.

[Account Closed]

Hi Frances,

I see you're in Abington. Small world - I'm in Glenside! :-) I'm a licensed home improvement contractor, and I've done lots of tile work. I'm with the crowd in saying that you should try some sulfamic acid. Use a stiff bristle brush along with an acid/water solution to see if you can loosen up some of the "overflow" grout. Then wipe the surface clean with a sponge. You can also try some acetic acid, aka vinegar. It usually works pretty nicely too.

Now if the installer used an epoxy grout or put a sealer over the grout, well that would make the job a bit more difficult. But definitely try the acids first. They could be the most simple, inexpensive solution.

Chris