I worked for a company that did basement waterproofing for over 30 years and has a great reputation with the local better business bureau.
The company would guarantee the results to the homeowner and the warranty was transferable to the new owner if needed.
What they do is dig a trench all around the perimeter inside the basement. They then drill holes into the concrete blocks to allow water to drain out and to relieve the water pressure behind the walls. The water is directed out of the holes into the trench by putting plastic up against the holes. The plastic covers the holes and forces the water into to the trench. The trench is filled with pea gravel and corregated pvc flexible pipe and it's all sloped to a sump pump.
Also the holes that are drilled into the concrete block are flushed out with a garden hose to get any mud out of the concrete blocks.
The trench is right next to the block wall and is filled with pea gravel up to within a few inches of the top of the fllor and then concrete is poured on top to match the basement's floor.
Any water that goes though the wall is captured by the drainage system and pumped out of the hose with a sump pump.
B-Dry uses a similar type setup to get the water out of the basement.
NOTE: It's best to setup the sump pump with a battery back up system in case of a short power outage.
I myself need this in my crawl space. I just don't have $6000 to get the job done right now.
My old boss used to work for his dad who started the water proofing business over 40 years ago. My old boss did waterproofing but also did whole house remodeling as well as commercial remodeling for a lot of the companies in Evansville, IN.
I hope this helps you and if you need any details just pm me.



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