Hello, I hope someone can offer advice. I noticed a little water around the base of my inside foundation in the basement during a winter storm. I first thought I had to seal the base joint of the wall where it meets the floor. But, I inspected today and found a 4" hole half way up the wall on the lip of the foundation. It's punched straight down into the block. I put a long screwdiver into it to see how deep it goes, and it seems to go down to the floor (5 blocks deep), and 4" wide.
The stains on the wall below the hole indicate that water has come out of the hole, it's narrow and looks to be as wide as the interior hole of the block. I'm guessing this would explain the water on the floor. How do I fill this in? Should I just fill it with concrete? Mortar? DryLock Compound? Any help i appreciated, thanks! --Chris