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Old 03-27-2007, 07:28 AM
 
1 posts, read 14,667 times
Reputation: 12
Unhappy Leaks in concrete slabs

My house was built in 1978/79 on a concrete slab. We have several cracks in the concrete, especially in the garage. Last month (February), I was entering the bathroom, in the middle of the house, and noticed that the carpet was wet in front of the door. This wet spot is about 6" x 6" directly in the middle of the doorway. The bathroom floor was not wet nor was any other place in the hallway. (We had had some rain, but not a lot.) All our plumbing was changed to overhead plumbing with PVC pipe about 5 to 6 years ago because of our well as it was rusting the copper pipe that was originally used. We have no idea where this water is coming from or how to fix the problem. Was wondering if anyone has any suggestions? Also we have a problem with ants and termites. I was under the impression that termites could not eat concrete. Have had an exterminator come out and supposedly take care of that problem, however, with the warm spring-like weather and rains, they seem to return every year. Any suggestions?
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Old 04-04-2007, 08:04 PM
 
1,773 posts, read 5,081,490 times
Reputation: 1320
Default water coming through concrete

Quote:
Originally Posted by ch0916 View Post
My house was built in 1978/79 on a concrete slab. We have several cracks in the concrete, especially in the garage. Last month (February), I was entering the bathroom, in the middle of the house, and noticed that the carpet was wet in front of the door. This wet spot is about 6" x 6" directly in the middle of the doorway. The bathroom floor was not wet nor was any other place in the hallway. (We had had some rain, but not a lot.) All our plumbing was changed to overhead plumbing with PVC pipe about 5 to 6 years ago because of our well as it was rusting the copper pipe that was originally used. We have no idea where this water is coming from or how to fix the problem. Was wondering if anyone has any suggestions? Also we have a problem with ants and termites. I was under the impression that termites could not eat concrete. Have had an exterminator come out and supposedly take care of that problem, however, with the warm spring-like weather and rains, they seem to return every year. Any suggestions?
Do you perhaps live on a side of a hill or in low-land where there is flooding? If there is a possibility that you have water draining towards your house from higher land, or you have moisture-full ground because the land around you is made of clay (poor draining) then I would say that you might be having an issue directly related to those things. Underneath your slab you may have flooding issues because water is not properly being directed away from your house.

This can be fixed - you'll need a company that specializes in water issues and concrete to help assess whether something as simple as drainage tile installation could help. If not there are other things which can be done. I just heard a sales pitch on this at a home & garden show.
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Old 04-05-2007, 07:48 PM
 
Location: Weston, FL
2,820 posts, read 8,465,534 times
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What part of the country do you reside? There is such as thing a sub- terranian termites. Have you checked around the perimeter of the home for wet areas?
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Old 04-05-2007, 08:50 PM
 
4,285 posts, read 9,735,200 times
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You don't mention if you lifted the carpet to inspect the sub-floor (slab) for cracks.

As mbuszu mentioned above, it's very possible for water to migrate up through cracks in the slab if the soil under the house becomes saturated. Exterior drainage tile will go a long way to solving this problem.

Actual cracks in the slab could be widened and then filled with an elastomeric sealent which would flex with any further movement of the slab.
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Old 04-21-2014, 06:31 AM
 
1 posts, read 665 times
Reputation: 10
What do you recommend for Southwest Florida area? Slab foundation with plumbing or overhead plumbing. Both seem a nightmare.
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