Flashing between concrete and siding


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Old 05-21-22, 11:55 AM
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Flashing between concrete and siding

Hello.

My front steps do not have a gap between concrete and siding because there is an open space underneath the steps directly into the basement.Now, the siding have deteriorated over the years and no amount of caulk can prevent the water from dripping into the basement when during the heavy rains directed toward the house.

I'm replacing siding anyway and want to install some sort of flashing. What I'm not sure about is what materials flashing should be. I have extra aluminum flashing I used on my other project above the door jamb. My though was to use it here as well using a bead of adhesive and caulk.

Is this a good solution or not?




 
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Old 05-21-22, 12:07 PM
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You will need sealant between the flashing and the concrete.
 
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Old 05-21-22, 12:13 PM
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Sealant as the one you would use to seal gutter seams?

Should that be just a bead or the whole surface where alum will touch concrete should be covered?
 
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Old 05-21-22, 12:15 PM
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A bead. Set the flashing into the bead.. Any concrete caulk will work. Like Loctite S10.
 
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Old 05-21-22, 02:39 PM
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More info needed, is the slap poured onto the siding or is the siding sitting on the slab?
 
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Old 05-21-22, 04:43 PM
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It is poured against the siding.



 
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Old 05-21-22, 07:24 PM
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That really makes no difference. You will be cutting the siding off that's behind the concrete and doing your flashing.
 
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Old 05-21-22, 11:37 PM
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It does.

there is an open space underneath the steps directly into the basement
So where is this open space that you mention where water it entering, if the siding is removed there will now be a larger gap there that needs to be dealt with!
 
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Old 05-22-22, 06:31 AM
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The only difference is that the flashing would be larger, longer. His method is the same. And he is asking about the method.
 
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Old 05-22-22, 06:51 AM
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Very hard to make any recommendation without actually being there and seeing how it is put together.

In the last picture it looks like that 4X4 is holding up the house end of the steps.
If possible the flashing should go flat against the wall down past where the house wall meets the foundation.
Then house wrap goes over that.
Then if you want you could add an angle flashing and do not let the siding come all the way down.

You can expect to have to replace some wood. The 4X4 post looks like it is rotten at the top and where ever the water was leaking into the basement there will be rot.

 
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Old 05-22-22, 09:59 AM
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My expectations is that I won't have to deal with the open gap, as it is will be covered with the new flashing and sealed tight. Thanks for the angle flashing idea.
 
 

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