Floor Grout Removal Problem

[bigdic]

I have a tiled bathroom floor which on someones advice I grouted with normal wall grout mixed with some PVA glue. It didn't look good straight away but now 2 years later it looks b%%%%y awful! So I want to remove the old floor grout and re-do it with proper stuff.

I went out and bought a grout scraper which is just not going to remove it in a month of Sundays. I have read some advice here about Sulfumic acid, would this work on my problem? If so where could I buy it?

If not is there any way to resolve my problem?

My gf wants to put lino down over ir but I spent ages putting little pebble tiles down so this is a last resort.

Thanks

 

[Jasonb]

Acid based cleaners ar really only for removing excess grout from the surface of poorly grouted tiles. They can also attack the tile or stone.

IF you laid the peddle type mosaics then your best bet will be to rip the lot up, grout rakes and mechanical tools only really work on straight joints.

Jason