Your situation may be EXACTLY like the others that are described here. Chances are you have a crack or crack, or some other opening, in your foundation wall, which is allowing water to enter. Once the water is in, it will flow through the wall, particularly if it is block, and come out where the wall meets the footing. From there, it can bubble up through the floor-wall joint, or flow through the gravel base below the floor slab, and possibly enter through a thin spot or a crack in the floor slab.
The solution is still the same; diagnose the problem before selecting a remedy, and you do that by performing a hose test as described several times in this forum. The hose test will reveal the location of the leak, but not the cause. The cause will only be known when excavation is done at the leak location. It could be failed or missing dampproofing, tree or shrub roots, expansible clay soil, improper backfill (construction debris, large rocks), or any of a few others.
When the cause is eliminated, repair the wall with hydraulic cement, then apply a thick coat of dampproofing, and embed in it a sheet of polyethylene film, then backfill with pea gravel.
Architect (NY) and Home Designer (PA)
Ok, here goes: Owned end of row house for 3 years. Every time I got a descent rain, my basement would get wet where the floor meets the wall and there would be a puddle or two in the middle of my basement (yet dry around it). So I caulked the outside walkway that butts up against the wall and now I only get water along the interior wall if it really, really rains hard for 4 days or so. I however still get the puddle in the middle of the concrete floor after a two day rain. Could you please advise? I am descent at doing things myself as I remodeled most of the rest of the house but clueless on how to handle the water situation. I read some previous posts but I understand my situation may be a little different than the others. Thank you, I really appreciate it.
