After the three attempts Di lorenzo Have tried to waterproof multiple repair patches over damaged waterproof, Tile over tiles ,tile over my weep holes come back use a grinder and jackhammer for hours, resulting in major damage to my building including brick work ,screen door and render. They used non english speaking tradesman if they were even tradesman. The job has been going for years and they still have not repaired the damage. come have a look for yourself ,I have a lot more pic's. DO NOT USE DI LORENZO..