High Water Table - Water Seeping In Through Basement Slab - General Discussion - Contractor Talk

High Water Table - Water Seeping In Through Basement Slab

 
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Old 07-06-2020, 09:56 PM   #1
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High Water Table - Water Seeping In Through Basement Slab


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Old 07-06-2020, 10:03 PM   #2
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Re: High Water Table - Water Seeping In Through Basement Slab


no mitigation plan from a geo-tech guy???...

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Old 07-06-2020, 10:30 PM   #3
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Re: High Water Table - Water Seeping In Through Basement Slab


Oddly enough, one of my current clients is a geo tech but I can't see myself putting the money into a remedy. The mitigation plan involves a shop vac and a dehumidifier. It's our starter house. Mostly unfinished down there. Unusual circumstances with the river beside us being abnormally high for much longer than usual. Still need to b!tch about it though.
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Old 07-06-2020, 10:35 PM   #4
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Re: High Water Table - Water Seeping In Through Basement Slab


did you know about the water table when you built?

any drainage installed?
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Old 07-06-2020, 10:51 PM   #5
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Re: High Water Table - Water Seeping In Through Basement Slab


It's an old house, built in '53. No floor drains and no evidence of perimeter drains although I'm not sure. Downspouts drain into rock pits anyways.

This just started a few days ago so it's new to me. Installing a sump pump may be a good option. I think I'll talk to my geo tech client tomorrow.
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Old 07-07-2020, 07:39 PM   #6
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Re: High Water Table - Water Seeping In Through Basement Slab


Put an interior drain tied into a sump-pump and let it keep pumping.
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Old 07-07-2020, 11:11 PM   #7
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Re: High Water Table - Water Seeping In Through Basement Slab


Some old houses here have water seeping in all the time. They'll retrofit a sump pump, then use the existing floor as a drainage plain, and put a floor system in that has drainage grid built into the bottom of the sheets, if that makes sense.
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Old 07-08-2020, 04:39 AM   #8
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Re: High Water Table - Water Seeping In Through Basement Slab


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Originally Posted by hdavis View Post
Some old houses here have water seeping in all the time. They'll retrofit a sump pump, then use the existing floor as a drainage plain, and put a floor system in that has drainage grid built into the bottom of the sheets, if that makes sense.
Yes, most of them have rat slab, in some, you be lucky if it's 1" thick in places... The last house I did if you hit the slab with a hammer it will crack like ice, so if there is a high water table or moisture content it will bleed through the slab...
Especially around columns because of a point load on the soil, you get the sponge effect it brings water right to the top.
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Old 07-09-2020, 05:43 AM   #9
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Re: High Water Table - Water Seeping In Through Basement Slab


I get water in my basement during heavy rains. It comes in thru cracks in the walls and floor. I do have a sump pump that gets most of it out.
Recently I started coating the walls with a product called Drylock Premium (Lowes), we'll see how it works. I'm hoping to get the water intrusion to a minimum. I don't think i'll ever get it completely dry.
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Old 07-09-2020, 06:19 AM   #10
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Re: High Water Table - Water Seeping In Through Basement Slab


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I get water in my basement during heavy rains. It comes in thru cracks in the walls and floor. I do have a sump pump that gets most of it out.
Recently I started coating the walls with a product called Drylock Premium (Lowes), we'll see how it works. I'm hoping to get the water intrusion to a minimum. I don't think i'll ever get it completely dry.
I've seen that on the shelves... Please let us know how that stuff works.

I have seen in similar to your situations DryLok still showed signs of moisture bleeding through, maybe the Premium will solve that issue.

Thanks!
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Old 07-09-2020, 12:09 PM   #11
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Re: High Water Table - Water Seeping In Through Basement Slab


https://www.flexsealproducts.com/shop/
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Old 07-09-2020, 08:58 PM   #12
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Re: High Water Table - Water Seeping In Through Basement Slab


No thanks on the flexseal
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Old 07-09-2020, 09:03 PM   #13
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Re: High Water Table - Water Seeping In Through Basement Slab


My bad, it's called Drylock Extreme. It takes 2 coats and if there are any leftover pin holes those have to be hit again.

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