My house was built in 1967 and I have a problem with my basement cement floor. There are several cracks in it and efflorescence keeps coming up through the cracks. Do you have any suggestions to what I could do to solve the problem.
Answer:
Not really. The efflorescence tells me that water has now migrated past the perimeter drainage tiles and is under the concrete slab. To reduce (not necessarily avoid) it, you might excavate and treat the basement walls and at the same time up-grade the drainage tiles. That will do part of it but as long as water keeps getting in under there, the efflorescence will continue. These are just various salts that are in the concrete and are getting washed to the surface as water wicks them up.
