Spent a whole afternoon chasing a tiny rust spot in my storage unit floor drain

Got a storage unit for my spare engine block and some transmission parts (long story). Everything was fine for about six months, then I noticed this little brown stain near the drain. Thought it was just dirt. Nope. Turns out a tiny pinhole rust spot was letting moisture creep up from the ground underneath the concrete. I put down a cheap tarp under everything but never checked the actual floor condition. Dried it out, patched it with hydraulic cement, then covered it with a rubber mat. Whole thing took like 4 hours for something I coulda fixed in 20 minutes if I caught it sooner. Anyone else deal with a weird storage floor issue that turned into a bigger deal than it shoulda been?

2 comments

2 Comments

mason.mark1mo ago

Buddy of mine had a moisture problem in his garage slab that turned into a full epoxy coating job just to stop the floor from sweating through a tiny crack. Four hundred bucks and a weekend later he could've just laid down a heavy tarp.

ben4021mo ago

Man, a heavy tarp would've done the job for like twenty bucks and zero headache. Epoxy's great if you're trying to make the floor look like a showroom, but for stopping sweat? Overkill every time. Concrete's just gonna breathe through whatever you put on top anyway, so sometimes the simple fix is the smart fix.