Another option, which I have not used myself, is used a lot in Houston. https://www.plylox.com/ This company sells a clip that is attached to 1/2"plywood, and you can typically get them at your loca ... read more
The wash the brick mason is talking about is an acid wash. That should take care of the white stains. As far as the vertical brick looking a different color, the acid wash should take care of that too ... read more