nealtw

If this wall is two bricks thick, I don't think you have lost a great percentage of the wall. I would knock off all the loose stuff and paint it. Keep an eye on it and if it don't keep happening, you get away with it.

BobAristide

Hopefully the water cam in just from the leak and not the ground. We always suggest using water repellent products like Faux Stone Panels when there is the potential for stone and brick to keep cracking and coming off. After you take all that time in scraping, repairing, match the existing brick look and paint, you should have something that will last. If I were you I'd wait until all is very dry and see if pieces are still coming off.

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