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Old 03-20-2019, 08:58 AM   #1
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Best way to fix foundation extension


Hello to all,

I did an extension to our farm house in 2002. The original pier and beam was poured in 1950. When I did the extension, also just a perimeter foundation, they dug down about 2 ft, appropriate rebar and doweled in to the existing foundation. The soil is a very sandy loam 4-5 ft, then clay. I think the width of the pour is 8-9 inches. No piers were done, which I now regret.

You can see the crack from where the two diff concrete pour separated, but the old foundation has also cracked. Since we also have really bad terminates in the area, I want to close the gaps. First pic is a close-up, the second is further back.

Here's my questions:
  1. What can I best do to fill the cracks?
  2. What is the process to fix them?
  3. What product(s) do you recommend I use?
  4. Other?
Thank you very much.
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Best way to fix foundation extension-foundation.jpeg   Best way to fix foundation extension-foundation2.jpeg  

Last edited by tstex; 03-20-2019 at 09:03 AM.
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Old 03-20-2019, 03:27 PM   #2
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Re: Best way to fix foundation extension


Hey guys,


I'm heading out tomorrow and was hoping to get a little direction on this...


What about some kind of quikcrete caulk that I could press into the cracks, then hit it w my air compressor to go into the crack further. Then when no more would go in, I'll just trowel it smooth. Wait a week and then come back and it it again for any shrinkage...is this plausible?
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Old 03-20-2019, 03:35 PM   #3
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Re: Best way to fix foundation extension


There are people that do this stuff but if they are not around, the rest of us would be just best guess.
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Old 03-20-2019, 03:37 PM   #4
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Re: Best way to fix foundation extension


I guess your concern is to prevent termite migration and not any structural concern.


Assuming your foundation wall is probably 8" wide, I do not know a sure method to inject that crack completely to block termite migration.

I think I would treat it intermittanly with a good termiteacde.

IDK

Good luck
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Old 03-20-2019, 04:51 PM   #5
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Re: Best way to fix foundation extension


Thanks Neil and MTN...I might have to dug down and out 2 ft from the cracked wall to see how far it goes down? Also, the cracks are pretty narrow and I doubt I could get a credit card in there, so I might have to chisel out some loose concrete and go a bit deeper to get a nozzle in there, or maybe even drill a 1/8" masonry bit into the cracks for deeper penetration of any type of compound.


What do you guys think? I like the tip in the video to wet the existing concrete so the old would not suck out all the water of the filler - I would not have done that.


Thanks, tstex
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Old 03-20-2019, 04:59 PM   #6
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Re: Best way to fix foundation extension


Quote:
Originally Posted by tstex View Post
Thanks Neil and MTN...I might have to dug down and out 2 ft from the cracked wall to see how far it goes down? Also, the cracks are pretty narrow and I doubt I could get a credit card in there, so I might have to chisel out some loose concrete and go a bit deeper to get a nozzle in there, or maybe even drill a 1/8" masonry bit into the cracks for deeper penetration of any type of compound.


What do you guys think? I like the tip in the video to wet the existing concrete so the old would not suck out all the water of the filler - I would not have done that.


Thanks, tstex
The foam was just a filler, I wouldn't go that deep, about an inch maybe more unless you find a void.
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Old 03-20-2019, 05:08 PM   #7
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Re: Best way to fix foundation extension


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Originally Posted by Nealtw View Post
The foam was just a filler, I wouldn't go that deep, about an inch maybe more unless you find a void.

ok, thanks Neal
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Old 03-20-2019, 05:34 PM   #8
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Re: Best way to fix foundation extension


Why not do it right the first time and be done with it?



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Old 03-22-2019, 09:12 AM   #9
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Re: Best way to fix foundation extension


Quote:
Originally Posted by Canarywood1 View Post
Why not do it right the first time and be done with it?



https://www.emecole.com

thanks Canary - I have a call into emecole
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