Exterior If it is not feasible to waterproof from the inside because of a finished basement another solution that exist is waterproofing from the outside. Depending on the on the circumstance all that might be required is epoxy injections with a layer of Bentonite clay.
Bentonite clay This material is a highly cost-effective remedial waterproofing system that stops water infiltration in existing basements and foundations. This is a excellent solution and is an extremely effective way to stop water from penetrating concrete walls, masonry block and irregular stone foundations.