Concrete slab lifting


Old 07-12-15, 03:46 PM
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Concrete slab lifting

I had a question regarding the best practices to raise concrete slabs. I have 2 concrete slabs (one at my front door, and one at the back door) and they have sunk in at the foundation side of the house. That being said, I do not have the access to dig around the edges to get under the slab.

Does anyone have any suggestions on how to repair this? I have read about mud / foam jacking, but this does not sound like a DIY type of job.

The slab at the front door is in an enclosed porch, so I thought that self leveling concrete would be the best solution. But the slab at the back door is exposed to the elements, and someone in the past attempted to use self leveling concrete, which has since eroded away.

Suggestions are appreciated.
Thanks in advance.
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Old 07-12-15, 07:35 PM
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Post a picture.
Mud jacking is about the only way without complete demo.
Main reason it failed 90% of the time is improper prep and compaction.
Old 07-13-15, 07:44 AM
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SLC is not designed to be a wear layer. Additionally, if the reason for the sinking is not resolved, nothing will work long term. Mudjacking is my first thought.
Old 07-14-15, 10:59 AM
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mudjacking should be your ONLY thought & no, its not diy/h-o work - not when the trk unit's over $90 K to buy - find a pro
Old 07-15-15, 01:54 PM
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Thanks for the advice everyone !

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