Re: Basement flooding even after new check valve installed...
Posted by iabide on 2017/5/9 18:50:26
One other potential source of flooding: when the sewers are full & your check valve is up, there's nowhere for the storm water from your roof to exit your building. (I'm assuming here you don't route your storm water directly out the alley or the front). I've had this issue from places where a high water table couldn't possibly be the culprit.
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