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Old 12-20-2009, 03:30 PM   #1
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part of a slab has moister


Hi, this is a one story small building construction.
It's slab built up on the top of mainly heavy clay soil which is raised about four feet above the level of the adjacent street.
I have removed an old carpet several years ago and put the wooden parquet right on the top of a concrete slab. In about a year ago some of a parquet panels ( line 2.5 foot wide and about 17 feet wide, going from back yard door to the front door across the leaving room) rosed turning into real bumps. I don't see any other reason for that than the part of a slab under it has a higher moister level than the rest of the concrete. I have removed a few panels and grasped that it hard to tell whether the concrete contains more moister or not.
Anyway, I noticed that there is a water seeping from under the foundation when I dug in next to it a pit to plant a bush. The water has been filling in and leveled approx. 10 inches below lower foundation level. So, my thinking now is going to dig a well at the foundation and put in a water pump to get water out and away.
Also, I have been told, to put a film of insulation on the moistened part of slab and repair the parquet over it.
I would appreciate any comments or thoughts in this matter.


Thank you,
RomanK

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Old 12-20-2009, 04:28 PM   #2
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part of a slab has moister


The only true way to tell how much moisture is in a slab (in my opinion) is to run a 72 hour calcium chloride test. I suggest stripping the affected area clean and treating it with a potassium silicate sealer that will block moisture. The only trouble with that is if you treat only an area you could cause the moisture to migrate to another part of the slab. This could be so with any treatment and not necessarily just silicates.
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Old 12-21-2009, 09:37 PM   #3
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part of a slab has moister


Hello Mr. Groutonce. Can you take me into details on running "a 72 hour calcium chloride test"?
And the second advise in this matter sounds like a pretty simple thing to do and I appreciate you for that. Can you tell by a way were potassium silicate sealer is sold?

Thank you,
RomanK
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foundation, insulation, moister, water, well water


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