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Removing dry grout from tile

Just finished grouting my bathroom this morning and as I went back to clean up the extra grout I noticed it had dried rather quickly this time around. Does anyone have any good ideas on how to get off dry grout from tile, so far I used a hard brush and a poris sponge surface with minimal results.

Re: Removing dry grout from tile

Get a grout sponge (it's big, about 3"x8"x3" or so), a bucket of water, a putty knife and gloves.

Wet the wall using the sponge, then gently scr-ape the grout off the tiles using the putty knife. Repeat as many times as needed, cleaning the sponge in a bucket of water everytime. Don't force the putty knife so you don't scrath the tiles. Work patiently.

Re: Removing dry grout from tile

If that doesn't work try using a scrub brush and straight white vinegar. It will smell something awful but works well

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