I observed that my indoor garage floor often exposes damp patches, as on the picture attached. I noticed that it is mostly visible in rainy days. The house is about 25 years old, I'm not sure how old garage floor, but most likely about the same age.
Interesting, it does not happen in entire garage, but specifically in one side of it only, I wonder if floor level matters?
When these patches happen, I power up fans and try to dry the floor. Is there anything I can do about it?
These are two photos outside of garage. The first one is a small garden (it actually came with the house, which I purchased recently) adjacent to the garage (interesting enough that this wall and floor inside the garage does not have any watery issues at all, very dry).
The second one is a path walk on the other side of garage along its wall (this garage wall inside is the one causing problems).