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Old 06-17-2016, 07:41 PM   #1
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Erosion issue under porch


I have had all sorts of erosion issues under my front porch mainly being caused by gutters overflowing. I have gotten new larger gutters and that issue is rectified. Now the second issue is being caused by all the rain water flowing down my asphalt walkway and running over my bottom porch step that is flush with the walkway. All that water goes in the gaps of the deck boards and flows right under the porch and puddles up until it creates a stream washing away dirt from under my house. I put gravel under the stairs but it didn't help.

Is there something I can do to cover or fill the gaps so water can't go underneath? Any other ideas?
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Old 06-17-2016, 09:02 PM   #2
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Re: Erosion issue under porch


Clear silicone caulk until the wood rots out. Then just rip out the bottom step and put concrete there.
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Old 06-17-2016, 09:04 PM   #3
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Re: Erosion issue under porch


I'd replace that bottom 'step' (which it really isn't) with pavers, similar to shown on either side. Those bottom wooden boards will rot in a heartbeat and possibly compromise the rest of the stairs anyway. If you raise the pavers and inch or so (so they are the same height as the adjacent ones) they will create a dam against the water. It will mess up the rise of the first step but without rebuilding the entire stairs I don't see much of an alternative.
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Old 06-17-2016, 10:19 PM   #4
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Re: Erosion issue under porch


I had a thought of pulling up the bottom step decking boards and replacing them with 2x but I do not want to create a trip Hazzard either....
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Old 06-17-2016, 10:21 PM   #5
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Re: Erosion issue under porch


Just realized the picture was upside down
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Old 06-17-2016, 10:24 PM   #6
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Re: Erosion issue under porch


If i put concrete there would I just box off at the stringers and fill with concrete? From under the porch there is a 3-5" space below that bottom step
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Old 06-18-2016, 08:54 AM   #7
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Re: Erosion issue under porch


Quote:
Now the second issue is being caused by all the rain water flowing down my asphalt walkway and running over my bottom porch step that is flush with the walkway.
Ayuh,.... Tear out the driveway, 'n regrade it to pitch Away from the house,.....


Everything else will just be a bad bandaid that won't fix a thing,.....
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Old 06-18-2016, 09:13 AM   #8
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Re: Erosion issue under porch


It's pitched to flow the water off the walkway to the yard beside it with the pitch of the yard. Just the water that flows down the edge of the flower bed pavers ends up on that step and therefore goes through the gaps. The front of my house faces north and my yard slopes pretty hard to the southeast. Even before I had the driveway/walkway paved the drainage was an issue there. The walkway magnified it i guess because how thick they had to put it down making it flush with that step.
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Old 06-18-2016, 10:21 AM   #9
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Re: Erosion issue under porch


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Even before I had the driveway/walkway paved the drainage was an issue there. The walkway magnified it i guess because how thick they had to put it down making it flush with that step.
Ayuh,.... That sounds like a poorly installed driveway, 'n walkway,....

Water flows downhill, 'n there's no way to change that,.....
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Old 06-27-2016, 08:55 AM   #10
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Re: Erosion issue under porch


Yep. I've been in contact with the company and they are going to come take a look and tell me what can do. It's past the 2 year warranty period so I'm not to confident that it won't cost me an arm and a leg
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