skim coating with hydraulic cement
so, i have this one section of one wall in my basement where water seeps through, it is about six square feet. water only comes through in periods where it has been raining for several days and even then it isn't much water. the wall had been sealed with white paint (drylok?) but it was flaking off. i scraped off all the flaking paint and skim coated the whole area with a mixture of quick-setting hydraulic cement. so far, this solution is working really well, plus being lime based it should breathe somewhat, which seems better than sealing everything in. but, i've become worried because this is not really a listed use of hydraulic cement. i'm wondering if anyone else has used this cement in this way - as a spot skim coating.
basement walls are poured, BTW, the house is 90 years old.