The bricks has been there for probably 2 months and at the beginning they looked great. They are
Perisher from PGH (http://www.gohardware.com.au/assets/full/MA0090.jpg). Now after brick cleaning they first started to turn a bit green (this was about 1 month ago) and today when we visited the site, many bricks, around 70% of the bricks, is now yellow/redish. It looks a bit like iron, but I dont know if it is iron or something else. What is this and how to get rid of it?
We took pictured and will send to the builder tomorrow.
But does anyone know what this is and is it gonna go away? It looks very bad and ugly.
