Basement Walkout Drain and Seepage Question

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rymik

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I have a very old basement walkout... basement door leads to stairs with drain at the foot of the stairs. Has overhead bulkhead/bilko door as well. I am getting seepage from the cinderblock retaining wall. Its stays damp in this area and a bit of the water that accumulates runs off into the drain at the foot of the stairs. I realize the fix is digging out the outside and waterproofing and adding a drain... but since this is outside of the house and there is a drain there I am wondering if its neccessary.

2 questions:

Would you agree some moisture in this type of area is normal/typical or should I be expecting it to stay bone dry?

Again there is a floor drain in this area catching moisture. This drain is connected to the sanitary sewer, its been this way for 60+ years.

If I were to redo the drain system, is it wrong to continue using the sanitary sewer or do I have to go to the trouble of getting it into my sump pit inside the basement?
 
Just a thought, but might Drylock Extreme or Thoroseal correct the seepage problem?
 
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