tile grout

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Old 03-28-09, 08:33 AM
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tile grout

I recently installed tile for the first time in my shed. When the grout dried it sunk down pretty low from the tile surfaces to the point where I'd like to add more grout. The grout is pretty dry so I think I missed my opportunity. Without roughing up the surface, is there anything I can apply to prepare the old grout surface for additional grout? I do have a gallon or more of left over concrete adhesive laying around. I appreciate any advice here since I'm pretty new to the subject. Thanks!!!
 
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Old 03-28-09, 09:11 AM
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Welcome to the forums! What type grout did you use, premixed or did you mix it yourself? If the latter was it the consistency of peanut butter or was it runny? Did you let your thinset cure under your tiles before you grouted. You won't be able to apply grout over the old grout. You will probably find the grout powdery anyway and it will come out either with a grout removal tool, or a rotary grinder. Start over again. Sorry for the bad news, but I know you want it done right.
 
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Old 03-28-09, 09:23 AM
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Thanks for your reply. I had my neighbor help me who supposedly does this for a living ?! I waited one week for the thinset to dry before starting the grout. The grout was mixed from a powder to a peanut butter consistency. The grout sunk to probably 1/2 the thickness of the tile. I was cleaning it last week with a sponge and water and even noticed bubbles in the grout. I wish I could do it again but I don't know if I have the will power to remove the old grout. Thanks again because you probably saved me from applying the concrete adhesive and then more grout and messing it up even more!!
 
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Old 03-28-09, 12:43 PM
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What is the width of the grout joints? Did you use sanded or non-sanded grout? Did you force the grout into the joints? Did you wipe the grout out of the joints while it was still wet when cleaning?

Make sure you use the right grout for the joint size. Non-sanded for 1/8" or smaller and sanded for 1/8" or bigger. You need to remove the grout to 2/3 the depth of the tile and then regrout.
 
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