
Sealing the wall and floor connection "like a fish tank" does not take care of the problem. Here is only one of the reasons why:
The water is still there and will eventually work its way back in. Once draintiles fail water no matter what will pool around the base of foundation. Concrete is pourous and water will seap through.
Next the drainage board is not a wooden board that would rot underground. The drainage board is a toughened polymere product that is attached to wall (not landscaping). This sheeting will guard against water penetrating foundation wall. Thus directing water down to "working" draintile.
While proper landscaping will help direct excess water away from foundation. Once draintiles fail, it is only a matter of time before water will enter the basement.