Sandstone Patio - Lichen and Algae

Today we're posting a small sandstone rear patio that was covered in algae and some black spot lichen. Before the job was confirmed on arrival for an estimate, the gentleman wasn't sure just how clean we could get the surface when I assured him it would look new again. He took me up on the offer for a free patch demo and the results spoke for themselves.

Winchmore Hill N21