On Saturday, May 25, 2019 at 6:44:06 PM UTC-4, Johnnyboi wrote:
So I want to hang up a pull-up bar in the basement wall that is concrete. My
dad says that we can't drill holes into the wall because water would leak
through. Is he right or wrong? We have had water leak through into the
basement when it rains a lot. I just don't see how the water would get through
to the holes.

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Is it really concrete or concrete block? Either way, you can drill it,
the holes don't have to be that deep to hold a bar. If it's really concrete
the holes won't go through. If it's concrete block they might not have
to be deep enough to go through either. But either way, just put some
silicone sealer or similar into the holes and around whatever anchors you use.