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Question DetailsAsked on 10/4/2017

Is there much involved in mud jacking a cracking slab floor both financially and whatever else on my part?

The house does not have gutters so the floor is cracking and sinking. Cracks are showing in the walls inside the house and the brick exterior. I need to know how much labor is involved on my part and, if possible, a rough estimate of cost to mudjack the slab.

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Like you have guessed, excess water around the foundation may be the source of your problem or may not be - would need to have an inspection by a Structural Engineer (your Search the List category) to assess the actual cause and assess whether your cracking is bad enough to require remediation as opposed to just patching and watching it. Common inspection fee around $300-500 which might, for a simple case, including a recommendation for remediation measures. More commonly another thousand or few for possible soil testing and a remedial design if not a simple case.


You can find a lot of previous questions about water issues and foundation problems in the Home > Foundation Repair and Home > Basement Waterproofing links under Browse Projects, at lower left. Many will not be pertinent to your case, but some responses have good lists of causes for this sort of problem, and on how to get rid of water sources or hold water far enough away from the foundation to mitigate its effect.


IF you have foundation walls then your slab (in basement or crawlspace presumably) is almost certainly just a floor base - with an open joint around the perimeter at the walls, so mudjacking would likely not be of use in your case because it would just lift the slab, not the hosue - basement/crawlspace slabs very rarely support the house, they are just poured after the foundation is in place as a floor or base for flooring - and it is very rare to effectively mudjack a strip footing under a foundation.


IF you have a slab-on-grade foundation (so the slab is the foundation and no foundation walls - the house walls just sit on the slab - then mudjacking can sometimes remediate the cracking and out-of-level slab. But will very rarely solve the actual cause, so that should be deetermined first. If mudjacking is suitable to your case, costs can vary a lot between contractors (commonly by a factor of 2-5) and also depending on the cause of the issue and how much you need to lift the slab (which can commonly require several passes of injection for more than a fraction of an inch) - but extremely rough ballpark, costs in the range of $5-10/SF of slab are common for mudjacking.

Answered 1 year ago by LCD




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