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Old 10-08-2012, 08:34 PM   #1
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water in basement bathroom?


My basement had a half-bath (sink and toilet).
The floor of the bathroom was raised 2 inches off the concrete by some 2x4's and plywood.

When the rain was VERY heavy we would get some water coming out from under the bathrooms raised floor.

I ripped up the floor and found mold growing on both the 2x4s and the plywood, and the obvious source of the problem was in the area of the toilet.

I think, the water may have been coming from between the toilets drain pipe and the concrete floor, as the water table raised.

We have not had any other water issues while we lived here (3 years).

I was thinking to solve this issue I would lay down some caulking around the toilet drain. Then put in a floor consisting of insofast pannels, a sheet a plywood, and tiles.

Any thoughts on how effective this approach might be?
Or any other ideas about how to stop the water, from coming into the basement?

thanks

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Old 10-08-2012, 09:07 PM   #2
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water in basement bathroom?


Caulking is not going to hold up.
If there's enough hydrostatic pressure under that slab to leak like that then you may need a sump pump. (if that's really what's leaking.

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Old 10-09-2012, 01:56 PM   #3
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water in basement bathroom?


thanks for the advice joecaption, I am 100% sure the leak is coming from in or around the toilet drain. and about 70% sure it is coming from the crack between the drain pipe and the cement. the other possibility may be it was leaking out from around the toilet base, but I only ever saw water when the rain was really bad.

Additional info, I'm on a 4 ft hill relative to my backyard neighbours (who don't have water in their basement) and the street level. but my soil has a lot of clay in it, so we probably have poor drainage.

I was also considering filling the 1/4" gap between the drain pipe and concrete with some of that spray on Rubber stuff, or expanding foam, or perhaps simply filling the gap with concrete.
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Old 10-09-2012, 02:04 PM   #4
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water in basement bathroom?


Post a picture of it.
You need to use Hydrolic cement to seal it.
Without first removing the flange there's no good way I can think of to seal it tight enough to make any differance.
All the other stuff you mentioned would be useless. It all poris and not make to hold back water.
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Old 10-09-2012, 07:27 PM   #5
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water in basement bathroom?


Thanks, I can do you one better then a pic. This is a youtube video of the toilet drain.



Thanks for all your help.
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Old 10-09-2012, 07:45 PM   #6
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water in basement bathroom?


oh, and this is a video of the spray on rubber stuff..
it is called flex seal
http://youtu.be/oh3JSR1URe0

There is also another one called "Rust-Oleum LeakSeal"

PS thanks for all your help
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Old 10-09-2012, 08:00 PM   #7
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water in basement bathroom?


Flex seal in not going to work for you. You will need hydraulic cement. I would recommend DRYLOK brand fast plug. It is also important to know for sure where the water comes from.

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