Now when we have strong wind driven rain the water is seeping through that crack and then down the window and the wall on the inside.
I would like to repair the crack from the inside and from the outside.
1) What can I use to fix it from outside that is waterproof? The exterior is grey painted concrete in that place. The fix has to be liquid enough to penetrate the crack and seal it against the rain.
2) What can I use to fix the crack from the inside? The color does not matter since it is behind the walls of finished basement.