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Help! Tiled wetroom floor looks perfect but grout doesn't dry out!
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[QUOTE="Paula, post: 865624"] Hi, I don't know whether anyone is still referring to this (very long!) thread, and I'm sure it's too late for Paul, above, but I have some information I thought I should share with you. I too was told by the technical people at Mapei that epoxy was not as flexible as cementitious grout, but that, unless there was constant movement in the floor, then it should be ok to use it on our tiles which are laid on a suspended timber floor. As there was not a huge amount of movement on our floor, and encouraged by comments on this forum by others who said they usually use epoxy in wet rooms, we went ahead. About 16 months after the epoxy was applied, I started to notice dark lines along a couple of the grout lines which surround the two tiles we tend to stand on when we shower. Over the following months these lines have got bigger, and they are now full blown cracks. However, they are confined to the area where we stand to shower, so most of the grouting in the shower area is still intact. Our builder has come to look, and contacted Mapei who have said that there is no flexibility in epoxy, but that the cracking could be to do with any of the following: - excessive movement in the suspended timber floor under the tray (ply not screwed down properly) - failure of the Impey tanking -water/moisture seeping to the ply in the flooring and making it swell We haven't noticed any leaking in the ceiling below so would be surprised if the Impey tanking had failed. He is asking what I want to do, but is suggesting that the epoxy is almost impossible to remove without damaging the tiles. I'm really not sure what to say! Obviously I'm disappointed that the epoxy has failed, given that it seemed like the perfect solution to our problems for over a year, but I still consider the bathroom "new", so am not happy that the shower area has large cracks. Long term, I don't imagine it's a good idea to let water soak down these cracks, even if there is intact membrane underneath? Any ideas anyone? Should I push for removing the epoxy and replacing it with normal grout, given that we eventually worked out that the original problem (permanently wet grout) was down to the tiler leaving a void around the drain that filled up with water, and that has now been rectified? or do you think that we'll eventually end up with cracked grout, whichever is used, as there is obviously movement in our floor? [/QUOTE]
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Australia Tiling Forum
Help! Tiled wetroom floor looks perfect but grout doesn't dry out!
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