The owner of this beautiful brownstone residence in Brooklyn was experiencing water intrusion in her basement for many years. The basement perimeter foundation walls were made of rubble and the mortar joints were deteriorated and were constantly wet. Our mechanics raked out these old sand /lime joints at least to 2 inches in depth and re-pointed them with Type S structural mortar. A couple of voids were encountered from old and defunct underground pipes and these were closed off with brick and type s mortar as deep as possible. The CGI waterproofing process requires a solid substrate as deep as possible so that maximum resin-gel penetration can be achieved.

The CGI waterproofing process was then implemented within the re-pointed mortar joints. The drilling/injection waterproofing was performed every 2 ft. on center from top to bottom along these perimeter masonry rubble foundation walls. As these masonry walls are very porous and have voids in their depth, the CGI procedure needs to be implemented very intensely, as much resin-gel is consumed to occupy these voids full depth. Upon successfully correcting the below grade water intrusion, breathable cement based coatings were applied to provide for aesthetics and the proper breathablilty of these masonry walls.