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Question DetailsAsked on 4/20/2018

are cracks in a newly poured basement floor a problem?

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1 Answer


Depends on how big and where - shrinkage microcracking (just barely visible) here and there are common, usually parallel to the edges. Wide open cracks or ones diagonal to the lay of the edges would be an issue, as would be many small surficial cracks leading to spalling (commonly due to overworking or too wet a mix or premature drying or freezing).

Also, especially if an unreinforced slab (not a good idea anyway but still done a lot), if you do not have control joints (formed or cut) then you will normally get shrinkage cracking every 4-8 feet or so, generally parallel to sides except can be diagonal in tight corners.


Answered 2 years ago by LCD

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