? Hey all, ? There is a 8" deep circular channel the circumference of a dime that goes ? into my poured foundation wall.(from where the forms were used.) It's ? cement covering has come off and when heavy rain occurs I have a leak coming ? in. ? I bought the powder concrete mix and tried to fill the channel completely ? but could not and I simply covered the opening up. Is this enough or is the ? channel supposed to be filled completely?
I don't understand your description, there shouldn't be a "channel" going through your wall, it should be solid cement. The only thing I can think of about the size of a dime is a snap tie, and in that case, the snap tie should still be in the wall.
Is the hole the shape of a cone?
In any case, it should be sealed on the outside of the wall. Once water gets into a concrete wall, damage is already being done, whether or not it penetrates to the space inside the wall.
It can be parged and dampproofed from the outside, but any fix from the inside is temporary at best. I've written about it on my web page. It's available here:
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Another suggestion I would make is to take a picture of it, post it to a web site, and give us the URL. That way, we can all look at it, and we may be able to give you an answer that way.
Best of luck, and let us know how it comes out!