Funny you mention the moisture meter—I actually picked one up last winter when I was trying to figure out a weird damp patch behind my washing machine. It’s surprising how much those little gadgets can tell you, especially if you’re not sure where the water’s coming from. In my case, it turned out to be condensation from a poorly insulated pipe, not a leak or drainage issue at all.
I’ve always thought heavy rain meant drainage problems too, but sometimes the timing’s just a coincidence. Water can travel in the weirdest ways through walls and floors. If you haven’t already, you might want to check around any windows or wall penetrations near where the pooling happens. Sometimes water sneaks in from outside and follows framing or pipes before showing up somewhere totally unexpected.
One thing I’d add—if you suspect it’s a supply line, try shutting off the main for a few hours during a rainstorm and see if the pooling still happens. That helped me rule out a plumbing issue once. Just a thought.
Funny how water always finds the most inconvenient path, right? I’ve had tenants swear it was a busted pipe, but it turned out to be rain sneaking in through a tiny crack by the window frame. Ever notice if the pooling lines up with wind direction during storms? Sometimes it’s not just the rain, but how it’s hitting the house. Those moisture meters are handy, but I still end up crawling around with a flashlight half the time...
