Hydrophilic/hydrophobic foams and epoxies During the rains of the 2004/2005 winter, southern California received over 35 inches of rain and many basement and foundation structures were deluged with leaks from cracks and cold joints. Our technicians went to work and performed numerous injection projects in conjunction with negative side waterproofing methods such as cementitious crystalline coatings to stem this tide of pernicious problems.    
         
  Chemical injection requires a good pump and an experienced technician. After several thousand feet of injection, a technician learns the art of how to drill to properly install the injection ports so that there will be proper flow of the materials within the crack or cold joint. Additionally, the mechanic must assess the level of moisture in the concrete or the degree of leaking to ensure proper activation of the chemical grout… too much catalyst and it will cure too quick before it flows to the next port, too little and it never properly seals the crack. There is no substitute for this experience.    
         
  Before you begin “negative-side” waterproofing methods, understand where you are “pushing” the water. Please note that all of this work occurs on a “best efforts” basis and frequently requires a follow-up because water has moved to a new area of the building and is causing problems that were not previously evident. Century Restoration Inc. has the experience to predict how effective this work may be and the technical knowledge to make sure that our work will hold up for many seasons to come.