question: concrete floor has efflorescence. Want to tile the floor

[look 171]

Ron, You must get at the water problem first before you do anything else. Is that water coming from the outside under the slab?

[rnln]

There is no water around this little bathroom. One side is the family room with laminate wood floor. One side is the patio. Another side is the yard but concrete slab.

I have 2 choices now. I will look into the thermal imaging camera. Or call rooter.

Thanks guys.