Garage wall marks

[kiicker18]

Hello all, I wanted to share a few images and see if anyone had any thoughts or concerns of what this could be.
In these 2 corners the concrete wall seems to get dark in a weird pattern sometimes leading me to believe it’s water, the drywall seems to be fine. To add to the mystery this wall is an above grade. It never puddles on the floor and I can never actually see water just this concrete pattern picture changes
The rest of the entire garage looks completely normal and dry all at the same grade.

I’m about to have the floor and walls professionally epoxy’d in a few days so I will be covering this up and wanted to see what the thoughts were before covering it forever

Picture attached as well from the outside marked in blue about where this corner pictured twice would land at

Thanks for any insight or ideas!

 

[jack stand]

That appears to be a parged block wall, very good at sucking up water. Parging the interior.... I've never seen. Parging the exterior is part of the "waterproofing" along with an asphalt coating below grade.
This is pointing to a possible long term moisture issue.
When (before the pics) was the last rain?

 

[kiicker18]

Last rain was like 2 days ago, we have had it be really dry for a few weeks in June and these spots still always showed a bit of darkness in color

 

[jack stand]

New to you house?
As long as it's a wall problem you might get away with doing your floor, but I have no experience with epoxy other than hearing that it's expensive. I think you'd be waisting money doing those short rough walls.
Waiting and observing or even having someone out there to investigate what's really going on would probably be a wise move.

 

[no704]

Ask the installers. Any moisture coming out of the concrete will cause the epoxy to fail.

 

[Danno1]

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When I epoxied my garage floor, I painted the stem walls w a good conventional floor paint. Haven't had any probs yet.


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