Concrete patio drainage problem
I own a ground floor unit in a multi-story condo building, built in the 60s. I am blessed with a concrete patio that slopes towards the house (by design!) and has a built-in gutter running along the side of the unit (I basically step over it when going in and out). I imagine at some point it must have been leveled so that the water could quickly run down the gutter towards the drain holes at both ends of it. That must have been decades ago. Now every time it rains the water accumulates in the low spots and somehow finds its way into the house and is slowly ruining my new hardwood floor. On the surface, it looks like the gutter is pretty well sealed, and I can't figure out where exactly the water is coming in. Any ideas on what I can do to a) find the leak and b) fix it without having to sell a kidney?