Need some guidance on a gap at the top of my foundation

Outside Inside Today I found this hole in my foundation wall - when I found it there was a piece of mortar that looked like it may have fit at one time, but it was sideways and clearly wasn't doing a lot to block the flow of critters into my basement. It looked like different mortar than what is in the rest of the wall, so I'm assuming this was a DIY fix at one time that has now failed. The house is 90 years old and I'd like to get this patched up properly. What's the correct approach here? submitted by /u/Kimbernator [link] [comments]

Jun 10, 2025 - 20:00
 0

Outside
Inside

Today I found this hole in my foundation wall - when I found it there was a piece of mortar that looked like it may have fit at one time, but it was sideways and clearly wasn't doing a lot to block the flow of critters into my basement. It looked like different mortar than what is in the rest of the wall, so I'm assuming this was a DIY fix at one time that has now failed.

The house is 90 years old and I'd like to get this patched up properly. What's the correct approach here?

submitted by /u/Kimbernator
[link] [comments]