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Ideas On Driveway Against Foundation

 
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Old 03-28-2020, 09:43 AM   #1
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Ideas On Driveway Against Foundation


I am installing a 6" reinforced concrete pad, basically a driveway, except it doesn't go to the street. I am planning to run the pad up to the foundation of the house. The foundation originally had pressure treated 2x4s embedded into it. These ran below grade, and rotted, so I removed them.

I am looking for ideas to make the installation look right and shed water properly. If I just pour the slab as is, the concrete will fill these voids, like interlocking teeth. What is the best way to resolve this?

BTW obviously I am still awaiting the crushed stone, rebar, etc.
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Old 03-28-2020, 10:02 AM   #2
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Re: Ideas On Driveway Against Foundation


Cut some 1.5" blue foam to fill the voids with.


You could also just pour right into them and use them as a guide for your control joints.


I don't think they would lock in enough to affect either the slab or the wall in any appreciable way.

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Old 03-28-2020, 10:09 AM   #3
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Re: Ideas On Driveway Against Foundation


Or maybe pour a little curb right alongside the building, becoming part of the building, this would also provide a little protection. Then pour the slab right up to the curb.
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Old 03-28-2020, 11:20 AM   #4
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Re: Ideas On Driveway Against Foundation


I would place 1/2 thick insulation board against the foundation, pour the concrete and after the concrete is dry cut the insulation flush with the top of the concrete then finish it with a bead of polyurethane sealant. That would make a good combo expansion joint/vapor and water barrier


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Old 03-29-2020, 02:46 AM   #5
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Re: Ideas On Driveway Against Foundation


a proper repair would excavate the grooves, clean them, fill with non- shrink concrete, then re install the tar / damp proofing with insulation this time, then pour your slab , half assed and water front exposure = sure rot.

Never pour a SOG next to a home with out an expansion joint between, IMHO


Drain to the water of course, no puddles near house.
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Old 03-29-2020, 05:43 AM   #6
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Re: Ideas On Driveway Against Foundation


Thanks for the replies. I've never seen an issue like this before.

I will install 1.5" foam in the voids, and 0.5" foam against the foundation.

I appreciate the help!

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