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How to repair damaged grout

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Posted by: from Medicine Hat
1/10/2012 at 12:43:30 AM

Client had bathroom floor tiled in black tile, black grout. Within a month suffered a sewer backup, where insurance company would not allow tile floor pulled up and redone. (basement floor). Now after clean up, grout looks almost white in spots, grey to black in other areas. Walls were re-drywalled 1 foot up in entire bathroom.

Wondering what can be done, if anything, to make the grout one consistant black color again. Client said cleaning agent used was eco-friendly,and had a strong orange scent. Hot water and elbow grease has not fazed it.

Any helpful ideas would be appreciated. Wondering if grout dye would help????

REPLIES (3)
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Date/Time1/10/2012 at 1:17:36 AM

Hi Tannis:

I have never heard of a grout dye. Normally, to achieve a consistant colour, the grout powder must be mixed thoroughly. You have to calculate the amount of grout that is to be used, and mix the appropriate amount of powder before mixing it with water.

As time consuming as it may seem, the only complete solution for an even colour is to dig out all of the old grout and then regrout the entire area. After the grout has dried, have the grout fully sealed with a proper good sealer. For bathroom areas, follow the manufacturer's recommendations for periodic resealing of the area.

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Tannis in Medicine Hat
Date/Time1/10/2012 at 2:51:22 AM

I have used a grout dye in the past, but only for the benefit of a client who was not happy with the dark tint her black grout provided her, on a kitchen backsplash.

In this case, I am wondering what to do, coming in after the fact of the floor being done, tiled, grout, sewer backup, cleanup, and is there another option?

I quoted her a cheap price, and would like us to both leave happy. At the time ,tho, I was only told, a quick re-grout job. Would prefer us both pleased with the end result.

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Date/Time1/11/2012 at 10:11:35 PM

You might get away with resealing the grout lines. Seems like the dust sunk into the grout and stuck.

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