My house is only 3 years old, but I do have a moisture problem. I live
in Cyprus -Europe and although the temperatures reach 100F during
summer, there is 50-70% humidity as well. During the last couple of
winters it has rained a lot for our geographical position. I
identified the problem in the porch tiles that were not seal proofed.
This combination (lot's of rain and the unsealed grout) must have
created the problem. I have two specific walls that seem to attract
most of the problem but I can also see some white moisture dust coming
off some ceramic tiles inside the house (the first two series).
During the last summer, I used some grout removal tools and scrabed
off some grout and regrouted with water-proof grout. But I still see
moisture coming off the problematic walls. I thought that the 5-6
month summer with such high temperatures would evaporate the moisture,
but was I wrong? How long does it take? After asking around, I was
told by an handyman that it takes years and that the only solution
(surprise, surprise he's got it!) is remove the wall cement mix and
use a special crystal in the new cement mix that will crystalise any
water/moisture coming in after that...
I'm a bit annoyed because I had just scrabbed, filled and painted my
walls only to find out that the moisture was there 2 weeks later! And
the biggest problem of course is the wife (-:
Any hints/help is mostly appreciated guys...