hi everyone,can anyone tell me the best tool and blade/disc for removing old grout,i have 2 large wet rooms and a kitchen to do at a sports centre so i need a good reliable tool to do the job,any advice would be appreciated..dob

Trade tiler do this blade specifically for the job Tradetiler Tiling Recent Updates and New Products it's about 20 items down the page, I've not used one myself. I use an old 115mm glass blade that is quite blunt but, still cuts through grout without damaging the tile edges.

i'm sure a fein multimaster would do the job well or a bosch if the budget don't stretch that much. there's various blades available for the job

Any idea what they are grouted with..?

If it is a cement grout then the fein multimaster is by far the best tool for the job IMO.

I use this, with a grout removal blade, seems to do it dead easy

the grout seems quite soft,the wall tiles have a 2mm space,i'm going to buy a 240v bosch pmf 180e,thanks for the advice everyone..dob