Hi all -
Getting ready for a ceramic tile install this weekend in my basement & ran into a possible last minute "uh-oh"
...I'm installing 13x13 tile using VersaBond thinset from Lowes over part of the concrete slab in my basement. Someone just mentioned to me that it can't be installed over a sealed concrete floor.
I _think_, but am not entirely sure that the floor was sealed after it was poured around 10 years ago. On the VersaBond bag it does say to remove sealant before applying.
I did a test with some water on various parts of the area I'm going to install the tile. When I poured the water onto the concrete it did pool a little... but after it either all soaked in (for smaller pours) or I wiped it up (on the larger pours), it did leave the concrete a wet color. Some of the dark areas were uniform in color, others had a snakeskin sort of pattern going on.
Will I be ok putting down the thinset as long as liquid does absorb into the floor - and leave it discolored - basically leaves a 'wet spot'?
Thanks!