Before Efflock, methods to control efflorescence required much complexity and have been flawed in one way or another. In fact, Chapter 9 of 2009 edition of the "Master Builders Association Guide to External Waterproofing" lists the the well adopted methods and highlights each of their disadvantages. In summation it concludes "there really is no way to completely prevent efflorescence"- which is incorrect.
Efflorescence is something that is not widely thought about, until it begins to deface a building and starts costing money. It has until very recently been considered a maintenance issue, but that is no longer the case. Builders and tilers are being held liable, so now is the time to start specifying Efflock for your next project.