Removing dried cementous grout

[mags]

Came accross a floor which has been tiled quite well by a neighbour of mine , however he has left the grout to dry before taking it off , tiles are a sandstone colour ceramic and it is hard to see when the light is shining through the window. However on a dull day its plain as the nose on arsen wengers fizzog. It does come off with a rough side of a spoonge and a little damp but takes a lot elbow grease.
Anyone know of a faster way?

[GirlRacerRed]

sometimes good old elbow grease is the only way, sorry

[peckers]

I use a grout film remover to remove stubborn grout, most companys do one, I use one from HG you can mix it to different strengths depending how stubborn it is!
Follow the instructions on the tin!! make sure you try it on an inconspicuos area first!!!
you can use a scrubbing pad with it to make it easier too..

[diamondtiling]

Use brick acid but be careful, Dilute it down and wear gloves, works everytime and costs £4.

[poynton phil]

I had the same problem once, with a floor tiled with porcelain tiles, used one type of residue remover, and it bleached the grout (fila i think) Then i was told to try LTP grout stain remover, and it worked a treat, also it removed the bleaching, wonderful stuff but dont forget to follow the instructions on the botttle, and do a test area in a inconspicuous area first, you can get Ltp products from tile giant.

[dagger]

lithofin cement away is great for this problem too!

[jamie B]

I had the same problem once, with a floor tiled with porcelain tiles, used one type of residue remover, and it bleached the grout (fila i think) Then i was told to try LTP grout stain remover, and it worked a treat, also it removed the bleaching, wonderful stuff but dont forget to follow the instructions on the botttle, and do a test area in a inconspicuous area first, you can get Ltp products from tile giant.

LTP grout stain remover IS the business!
I recently did a job where the floor in the kitchen had been grout stained for nearly 2 years around their AGA where the tiler had not washed off lively enough when the oven was on! (ie it had 'baked' onto the face) LTP took it off in seconds with no repetative strain injury to the arms!! excellent stuff!

[Terry Cottar]

you need to find out if the grout used was a flexible grout. If it was you will need Aqua Mix Sealing & Coating Remover to break down the polymer side of the grout then once it has dwelled for about 30 minutes add Aqua Mix Phosphoric Acid Substitute to break down the cementitious side of the grout

tel

[Terry Cottar]

Use brick acid but be careful, Dilute it down and wear gloves, works everytime and costs £4.

Not a good reccomend IMO! dangerous stuff to start with indoors and what if its modified grout?

tel

[mags]

you need to find out if the grout used was a flexible grout. If it was you will need Aqua Mix Sealing & Coating Remover to break down the polymer side of the grout then once it has dwelled for about 30 minutes add Aqua Mix Phosphoric Acid Substitute to break down the cementitious side of the grout

tel

Yeah its flexible grout from toppstiles so id imagine BAL.

[Terry Cottar]

Yeah its flexible grout from toppstiles so id imagine BAL.

Then just follow my post above and you should be OK

tel

[doug boardley]

LTP Grimex and a felt pad on an orbital sander, do it in next to no time

[Dave]

Same as doug....LTP grimex and a green scotch pad...

[wacker]

Had the same problem a couple of days ago. (I did not do the tiling) The customer had used just about every type of cleaner to get rid of the leftover grout residue. The grout was BAL Ebony with a Slate effect ceramic tile. In the end, phoned around and used lemon juice and white vinegar. I used a small amount where the cooker was going to be insatlled in case it all went wrong. Two minutes later clean tiles under the cooker. Left it half an hour to make sure the grout was not effected. No problems, 40 minutes later perfect floor and one every happy customer!!!