Exterior waterproofing is called “positive side” waterproofing. Anything installed on the interior of a foundation is a “negative side” solution.
Image #1: Tim Garrison, The Builder’s Engineer
Electron microscope image of Xypex crystals.
Image #2: Xypex
This waterproofing selection chart provides a useful approach to separating the wheat from the chaff when choosing a waterproofing product. (Click on the image to enlarge it.)
Image #3: NAVFAC
This image from a Tremco Technical Bulletin shows how challenging it can be for negative-side waterproofing to prevent below-grade water leaks.
Image #4: Tremco
The Koster NB1 system includes a cove detail at the cold joint formed between the foundation wall and slab
Image #5: Koster American Corporation
This illustration is one in a series depicting the steps to the Hammer & Hand approach to interior basement waterproofing. (Hammer & Hand is a builder with headquarters in Portland, Oregon.)
Image #6: Hammer and Hand
In this 36-wythe foundation wall there is an interstitial space into which the Koster injection system was installed.
Image #7: Koster American Corporation
Note the taps and installler in this image of the Koster injection system being used on a concrete block wall in the Empire State Building.
Image #8: Koster American Corporation