A cleaning job done by Quality Pressure Washing. This very large, beautiful estate has some really nice brick work, but over the years the lime run has take over in certain areas. Notice the concrete decking above the brick where water infiltration has cause the lime runoff to cascade down the face of the brick.
Some areas are very thick with lime run. (Calcium Hydroxide)
Applying several applications of Calcite Presoak and allowing it to dwell for an extended time helped to loosen the deposit.
Once the lime run was loosened without rinsing, NMD 80 was applied to finish the job for that "like new" look.