Brick cleaning is a tough area and it is due to the grout used. technically you want what is referred to as a “soft wash” which has water pressure between home typical pressure and full blown pressure or power washing. It is a dicey area, not easy and possible to do, however there are some caveats. The first is the condition of your grout and it’s age, I may start a job and not be able to do it because of this. I will talk to customers about all of this prior to beginning work.