Just lifted an existing floor of 30 x 30 tiles laid onto 4mmm (?) ply with what appeared to be a non flexible adhesive and grout, it had been down 10 years with just one cracked tile.Lifted the ply also.
Now; modern methods.........laid 9mm ply screwed every 150 square (onto floorboards), primed, laid 60 x 60 ceramic using one part bal flexible and grout with flexible grout (bal again).
1st problem..noticed grout had actually shrunk back and cracked in quite a few places.
2nd, Some tiles have started to "pop", that is move up & down, you cant pull them out of their bed using suckers, but they will move.
I can actually put hand pressure on tiles and they will show movement, especially on corners.
Left the job over xmas and will obviously go and re grout, but concerned about long term effects.
Anyone with any advice, remedy ?
Caly
Now; modern methods.........laid 9mm ply screwed every 150 square (onto floorboards), primed, laid 60 x 60 ceramic using one part bal flexible and grout with flexible grout (bal again).
1st problem..noticed grout had actually shrunk back and cracked in quite a few places.
2nd, Some tiles have started to "pop", that is move up & down, you cant pull them out of their bed using suckers, but they will move.
I can actually put hand pressure on tiles and they will show movement, especially on corners.
Left the job over xmas and will obviously go and re grout, but concerned about long term effects.
Anyone with any advice, remedy ?
Caly