"Joseph Meehan" wrote:

Dave wrote:
"Joseph Meehan" wrote:

Dave wrote:
I have moisture in walls in a three spots. This is a concrete house.
One wall has red brick inside but it is encased in concrete.


The moisture is coming into the home somehow. If it is not a
plumbing leak. Possible, but it does not sound likely, then I would
would think rain is your problem. You need to find the source and
eliminate it (them). They may not be near where you are seeing the
results. Finding them can be difficult sometimes. Someone with
experience is more likely to be able to find them.

Good Luck

What I would like to know is how long does it take for concrete to
dry out if receives no water from outside source.

Thank you for your reply.


Is the concrete in contact with the ground? If so it depends on the
moisture in the ground and how easily it flows through the ground. Not all
concrete is the same so that will add to the variations what is the humidity
and is the air still or is it moving? Is the area closed off or does it
have free circulation with the rest of the house - outside.

The concrete is not in contact with ground. The slab which the wall is in contact
is about 10 feet from ground. There's a a big "crawling space". The downsprout
goes through the slab at the very point of both moist wall points.

Looking at the places from below in the crawling space I can't see any wet spots
there. That is why I'm inclining to think it is not a leaking pipe allthough the
copper pipes are 30-40 years old.


There are just far too many variables to come up with any kind of easy
answer. It is far easier to measure it. It is my experience that it takes a
typical wood frame home about two days to dry out from a typical warm humid
day, when the home is closed up and A/C is turned on. You mileage will
likely vary based on your local conditions and construction as well as
furnishings.

The concrete looks a bit porous but it is concrete.



About a week ago the downsprout was sweating but a day later it
warmed outside it is it not moist anymore.