Discuss Failure! in the DIY Tiling Forum area at TilersForums. The USA and UK Tiling Forum (Also now Aus, Canada, ROI, and more)
I got that all wrong thenWe don't have under floor heating, just convential radiators
I got that all wrong then
Just reviewed the pics. It looks to me that the different coloured adhesives are from different periods i.e. floor originally tiled with the lighter (white) adhesive and then retiled with darker adhesive (maybe even over a grey SLC). That should not be a problem however looking at the pics of the partly taken up tiles there seems to me to be very little joint spacing between the tiles (the grout is clinging into the radiuses on the edge of the tiles and the thin joint in between. This could part of the reason for the failure - the tiles have very little compressible grout between then to absorb some of the stresses due to eg. thermal movement . They have held out for the 12 years and then maybe some additional stress occurred which caused the tiles to tent. When the tiles are relayed make sure there is minimum 3mm gap for grout between them.His opinion is the floor has lifted because of the poor tiling job which is of course is definitely correct! Just still seems strange how it lasted so long then tented so badly in a straight line over a period of approx 2 weeks.
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