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We have a major issue with leaking in the basement. My fience says adding a ton of dirt and grading out about 4 feet will solve the problem. I think we need something in addition like those drains that you bury to direct some of the water. We are in the middle of a basement improvement project and the leaks are getting worse. I'm worried it will ruin what we've done. also the cement wall in one corner is getting some black mold on it and I'm worried about that. Any help would be great.
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you should always have positive drainage FROM the house to help direct surface water AWAY from the soft backfill next to the foundation walls,,, that includes downspouts, too, but solving the issue's another story,,, imagine your basement's like a ship's hull from the waterline down - a good comparison for the application of the 4 rules of water: 1, it runs downhill - no surprise there, huh ? but that leaking water's had years to penetrate the bsmt &, in the process, has created underground capillaries & mini-streams which carry the water downhill towards---- guess where - YOUR VERY FINE BASEMENT !; rule # 2, water takes the path of least resistance { cue the underground waterways }; 3, water seeks its own level,,, unless the water can penetrate where it is now, it'll find another entrance [ see rule 2 :furious: ]; & 4th, water rushes to fill a void { try making a hole in the bathtub full of water :censored: }.

the combination of all 4 working in concert make it VERY unlikely anyone can stop water,,, even IF you were to stop it, the soil acids in solution will attack the lime & find pinholes in mortar,,, failing that, hydrostatic pressure will usually force water UP THRU THE FLOOR.

the standard industry approach is to open the floor alongside the footer & excavate to its btm - place 4" perforated pipe in the rock lined trench, & lead that pipe into a sump in which you'll place a float-controlled pump [ this is where we find the term ' sump pump ' often used :yes: ]

however { WAKE UP ! ! ! THOUGHT YOU FELL ASLEEP BY NOW :laughing: } the system does work & will ' manage ' the leaks,,, for more info, google up natl assoc waterproofing & structural repair contractors - they've got a decent website,,, as some other wag on this forum or another notes, its only rocket science IF you're building rockets,,, it IS dirty, backbreaking work, tho,,, good luck & forget the drylock - not worth **** ! ! !

wash the mold w/chlorix/water 1:1 - that's the best anyone can do !
 
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