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Old 07-01-2013, 08:55 PM   #1
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Water seapage where wood wall and storm door meets cement slab.


I have a water problem with our patio that I'm not sure exactly how to explain it, but here it goes anyways: The walls and door are framed with what looks like regular 2x4's and the problem is that the 2x4's and stormdoor threshold are laying flat on the concrete slab. This is where the water is seaping under and puddling up onto our patio.
Do I need some sort of concrete sill poured and then use a sill gasket between the raised concrete sill and new treated 2x4's?
Any advice would be greatly appreciated.


Last edited by dmbfanatpsu; 07-01-2013 at 09:03 PM.
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Old 07-02-2013, 06:49 AM   #2
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Water seapage where wood wall and storm door meets cement slab.


This is one of the most often seen building 101 mistakes by far.
That stoop or patio should not have been pored within a minimum of 4" (some codes call for 6") of that threshold, and always below the siding.
Got a picture of the outside, no close ups needed.

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Old 07-02-2013, 09:01 AM   #3
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Water seapage where wood wall and storm door meets cement slab.


Yes here are some more pictures. I should also note that the house is 90+ years old.
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Old 07-02-2013, 09:01 AM   #4
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Water seapage where wood wall and storm door meets cement slab.


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Old 07-02-2013, 09:17 AM   #5
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Water seapage where wood wall and storm door meets cement slab.


put a 4' level on that concrete slab
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Old 07-02-2013, 09:22 AM   #6
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Water seapage where wood wall and storm door meets cement slab.


sorry but what do you mean by "put a 4' level on that concrete slab" ?
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Old 07-02-2013, 03:48 PM   #7
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Water seapage where wood wall and storm door meets cement slab.


Place a bubble level on the slab to see if it is sloped away from the house or toward the house.
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Old 07-02-2013, 03:58 PM   #8
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Water seapage where wood wall and storm door meets cement slab.


oh...i've done that and it does slope very slightly towards the corner of the house.
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Old 07-02-2013, 07:37 PM   #9
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Water seapage where wood wall and storm door meets cement slab.


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oh...i've done that and it does slope very slightly towards the corner of the house.
There's your problem.
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Old 07-02-2013, 08:46 PM   #10
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Water seapage where wood wall and storm door meets cement slab.


Ok thanks for the clarification....but what remedies are there to fix this issue?
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Old 07-02-2013, 08:51 PM   #11
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Water seapage where wood wall and storm door meets cement slab.


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Ok thanks for the clarification....but what remedies are there to fix this issue?
Sorry.
You need to complete demo the entire 90+ year old settled in place and likely resurfaced at some point porch... and then start over.

This time 1) have the finished surface farther below the threshold and 2) pitched away from the house.

You *might* be able to get away with only removing the top concrete slab portion but the odds of that happening without either damaging the rest or exposing deeper problems are not in your favor.

Last edited by TarheelTerp; 07-02-2013 at 08:54 PM.
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Old 07-02-2013, 08:54 PM   #12
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Water seapage where wood wall and storm door meets cement slab.


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Sorry.
You need to complete demo the entire thing and start over.
This time 1) have the finished surface farther below the threshold and 2) pitched away from the house
Seems extreme for a bit of water leakage. Just for clarification that this patio is actually the top part of a garage that's underneath.
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Old 07-03-2013, 02:35 PM   #13
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Water seapage where wood wall and storm door meets cement slab.


The only solution I see, other than doing a demo on the concrete slab to re-slope it, is to cut in a french drain immediately in front of the door and adjacent wall. You can slope the french drain towards the right (away from the house) and have it drain through a penetration in the wall on the right.
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Old 07-03-2013, 03:25 PM   #14
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Water seapage where wood wall and storm door meets cement slab.


Just to clarify again that this isn't a slab, but rather the top side of a garage sits under it.
I like the French drain idea but I don't know if it will work because the garage underneath? Guess it depends on how thick the concrete is?
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Old 07-03-2013, 04:54 PM   #15
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Water seapage where wood wall and storm door meets cement slab.


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Originally Posted by dmbfanatpsu View Post
Just to clarify again that this isn't a slab, but rather the top side of a garage sits under it.
I like the French drain idea but I don't know if it will work because the garage underneath? Guess it depends on how thick the concrete is?
Still a slab......just not on grade. If underneath is the garage then, you can run the french drain piping within the garage to wherever it needs to go.

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