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Wet area on garage pad doesn't dry up?

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  • Nov 30th, 2019 9:47 pm
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Wet area on garage pad doesn't dry up?

Hi all
Just moved in last week and we noticed this area of garage doesnt dry up!
No downspouts leaking above or leaks we can find.
Any ideas what it could be?
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Checked the seal.seems good. Maybe plug drain underneth is perculating up?
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No expert but I'm guessing you have a drain spout on the other side of that wall which is draining back towards the foundation.

This has been going on a while and you can see by the depression in your interlock which has most likely been caused by erosion from the water draining downwards towards the the street.
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IMHIP2 wrote: No expert but I'm guessing you have a drain spout on the other side of that wall which is draining back towards the foundation.

This has been going on a while and you can see by the depression in your interlock which has most likely been caused by erosion from the water draining downwards towards the the street.
Good eye!
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IMHIP2 wrote: No expert but I'm guessing you have a drain spout on the other side of that wall which is draining back towards the foundation.

This has been going on a while and you can see by the depression in your interlock which has most likely been caused by erosion from the water draining downwards towards the the street.
No drain spout on that wall.
The interlock caving is from cars riding over them for years and not being lifted up and releveled.multiple houses on my street have the same issue. Im gonna lift those all up in the spring and releval.
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My guess would be water seeping between the wall and floor slab. The ground on the outside of that wall is likely higher than the floor slab. A crack in that concrete wall could cause water to seep under the slab and then seep up through the joint between the wall and the floor. This what happened in my case but I did see water pooling on the outside which eventually made its way in.
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Need more info. Never dries up? Like never? Even when it hasn’t rained for days ?
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Firstly....are you sure it's water? If it is. I'd dry it up with fan and then see where the "water" starts.

What's the slope like in your garage /driveway?
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fdl wrote: Need more info. Never dries up? Like never? Even when it hasn’t rained for days ?
We just moved in last week. Hasnt in a week. Been 24 hrs since it rained here. Same.
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gr8dlr wrote: Firstly....are you sure it's water? If it is. I'd dry it up with fan and then see where the "water" starts.

What's the slope like in your garage /driveway?
Seems to be water. Not sure what else it could be. I had a fan on it for 4 hrs today. Didnt change.
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lazybummer wrote: My guess would be water seeping between the wall and floor slab. The ground on the outside of that wall is likely higher than the floor slab. A crack in that concrete wall could cause water to seep under the slab and then seep up through the joint between the wall and the floor. This what happened in my case but I did see water pooling on the outside which eventually made its way in.
How did you fix?
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speeeeee wrote: Seems to be water. Not sure what else it could be. I had a fan on it for 4 hrs today. Didnt change.
If it never changes, it could be something spilled there like oil or something and it’s stained ?
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fdl wrote: If it never changes, it could be something spilled there like oil or something and it’s stained ?
That's what i was thinking as well.
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Whats on the other side of that garage wall? Is there an eave in that area? Could be hydrostatic pressure.
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There is a eve above but no downspout here..also no sign of water leak from the outside of this area.

Pic attached
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speeeeee wrote: There is a eve above but no downspout here..also no sign of water leak from the outside of this area.

Pic attached
Perhaps your eavestrough is leaking? Are you sure the fluid is water and not some oil? Have you been able to dry it up yet?
Last edited by engineered on Nov 29th, 2019 12:11 pm, edited 1 time in total.
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Nothing on the basement wall in the same area? Have you actually touched it to confirm it's water? I'm guessing hydro if it is.
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engineered wrote: Perhaps your even is leaking? Are you sure the fluid is water and not some oil? Have you been able to dry it up yet?
Appears to be water. But im going to buy some tsp today and scrub at it and see what happens.
koffey wrote: Nothing on the basement wall in the same area? Have you actually touched it to confirm it's water? I'm guessing hydro if it is.
Cellar wall is perfect. No signs of water. Yes appears to be an no oilley liquid.
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speeeeee wrote: Appears to be water. But im going to buy some tsp today and scrub at it and see what happens.


Cellar wall is perfect. No signs of water. Yes appears to be an no oilley liquid.
I would use an outdoor broom to brush it away, then dry it up with a mop or paper towels, then point a space heater at it to completely dry it, then see what happens.

Is there any plumbing in or near/above that wall? How far is your outdoor water faucet?
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engineered wrote: I would use an outdoor broom to brush it away, then dry it up with a mop or paper towels, then point a space heater at it to completely dry it, then see what happens.

Is there any plumbing in or near/above that wall? How far is your outdoor water faucet?
Its more damp than standing water. I put a heater on the section for the past couple hours. We will see.

About 15 feet from the shutoff garage spigot.

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