I notice quite a few hairline crack in my basement concrete floor. I've lived here for 14 years and no water has come up through the cracks. The townhouse was built in 1999 (so it is not a new pour). I don't know if the cracks have been getting worse or not; I just didn't notice them before, but maybe they were always there. Is this something I should get fixed (how)? Or is it possible that they won't get any worse and water is unlikely to ever come in, if it has not come in yet.
Concrete – Are hairline cracks in basement concrete floor a problem – no water coming in
basementconcretecrack
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Best Answer
Concrete slabs crack. Period. For this reason, "control joints" are often cut or tooled into slabs where aesthetics are a concern. They encourage cracks to occur along straight lines where they create less of a visual blemish and can better be accommodated by expansion joints in rigid flooring.
In your case, it's not likely a concern.