I'm in a new to me house and have a few questions regarding the concrete setup in the garage.
Most importantly, it is getting very dirty with the winter driving and caked with mud constantly. I have a power washer, and I have washed in the past, but my concern that a friend brought up to me is the following.
I have this gap in between my garage and driveway to the point where the vast majority of the water/dirt does NOT drain down the driveway, due to this gap.
Pic for reference:
As you can see, power washing the concrete floor means all that water falls into the gap as the garage concrete looks to be about an inch higher. The concern my friend brought up is that all that water will crack the garage-side concrete long-term. I'm not a total idiot here, I'm fully aware of how much water can damage home building materials. We had a bathroom remodel in this house that was fully molded and rotted due to moisture.
ANYHOW, back to topic :)
This is directly in front of the garage, I don't think there is any relationship between this concrete and the foundation concrete of the house. Nonetheless, I don't want to introduce cracking whether it's the foundation of the house, or just the concrete of the garage.
What is the best approach here? Does this gap have to be filled with concrete? If so, will the driveway concrete still have enough room to expand and contract etc? Part of me believes that maybe this wasn't a gap at all when the house was originally built (70s), but over time, the concrete on the driveway side has shifted away and created such a gap.
Ideally, it would be awesome to have a solution to where it would drain down the driveway with something I insert in there, and I don't have to mess with concrete work or hire someone for that since I've never worked with concrete and will probably screw the job up :)
My last question is regarding the expansion joints on the garage floor (Already pictured above). I want to epoxy paint long-term, can/should these joints be filled or is that a problem? Half of the time I see a nice looking garage floor with epoxy paint, the expansion joints are filled, and other times they are not, and I never understood the difference.
Thank you all for your time and answers.