grout softened up


Old 02-01-09, 07:55 PM
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grout softened up

i installed tile in shower stall on floor over sand mix mortar - let set for 24 hrs. - grouted tile - let set and dry for 48 hrs. - put sealer on grout - let dry for 24 hrs. - used shower and some of the grout softened up and became milky and washed away. had to reset some tiles since water got underneath them. i re-grouted and resealed. with longer drying and setting time. want to use shower again but not sure if the same problem will occur or not. is there a special sealer or procedure i should use to ensure that this doesn't happen again?
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Old 02-01-09, 08:58 PM
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Specifically what did you use to stick the tiles down?

Old 02-03-09, 01:57 PM
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Exactly what kind of thinset mortar or adhesive did you use? Exactly what kind of grout did you use? Give specific names of products used.
Old 02-03-09, 02:18 PM
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I'm betting no preslope and mastic.....
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