The basement in my home was poured in the late thirties. I have recently turned it into an apartment and now I need to know what can be done to stop the moisture on the concrete walls. I have to keep a fan oscillating to try to keep the walls dry. I would appreciate any helpful information to solve this problem.
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Try using a DE-humidifier or reduce your humidifier settings if you can. The "warm" air in your basement is carrying moisture and the moisture is condensing on the cold concrete walls. If you reduce the moisture content of the air in your basement, you might be able to signicantly reduce the condensation on the cold concrete slabs of your basement walls.
Depending on what you are willing to do, you may want to glue hard foam insulation to the foundation walls and erect independent interior walls to help insulate the cold concrete from your moist interior heated air, but that's extra expense for a basement apartment.
Good luck
Can you get to the concrete or block walls and floor? I think you need to stop any moisture coming in through the concrete by sealing them.
The only long term solution is to stop the water on the outside. Any inside fixes (including drylock, etc) are temporary at best. The exception being cracks. If water is seeping thru a crack in the foundation, there has been some success with a hydraulic patch.
But no sealer is going to last more than a few years on the inside.
