For those looking for exterior bentonite pressure injection for waterproofing you've found the right place. Exterior waterproofing using bentonite was discussed on the Home Improvement Show with Lindus Construction on WCCO Radio Saturday Morning with the experts agreeing that stopping water on the exterior (with bentonite) is the best way to truly waterproof your foundation.
The example presented was a wet basement floor leaking from the seam the floor and wall make. In most cases this is a cold joint with no gasketing meaning that it's two pieces of concrete installed at different times. Once the water pressure outside is high enough it will push water through this area.
Using a waterproofing mix of all-natural bentonite, Great Lakes Waterproofing fills the water-pathways, once the bentonite sets up water cannot pass through it, creating a waterproof barrier. More water pressure just pushes the bentonite tighter against the foundation.
For new construction we can install a bentonite membrane before the concrete is poured. We overlap all the seams and cover everything below grade. Once backfilled this is one of the most durable types of waterproofing known.