Originally Posted by Steve_DIY
Now I assume that when the interior French drain was installed, there were holes drilled in the base of the block wall to allow water to enter the drain tile and out of the block itself. I have not verified this with the company but from what I know of these types of installations, that is common practice.
I can only guess, but I wouldn't be suprised if the holes weren't drilled, aren't effective, etc....
When drilling each core at the base of the wall, it's imperitive to also drill a whole higher up in the wall (usually in a bed joint, about 4-6 courses from the floor) and flush water through the upper holeto ensure that the weeps actually function. Mortar damming on the footing can be a large problem on concrete block foundation walls, and a few different methods evolved through the years to address at construction. The fact remains, if there's a few inches of excess mortar dropping over the footing, water will never be able to weep through to the holes........