Browse Forums General Discussion 1 Feb 24, 2011 11:18 pm Hello all: after brick cleaning of the top floor, our PGH Sand Dune bricks had some seriously ugly acid burn (iron stain). The brick cleaner was there again today (2 months later) and partially removed the stain in the accessible areas, but there are still obvious unsightly traces making the brick yellower/browner than it should be. Is it reasonable to demand that the brick cleaner has another go, or is it impossible to do any better? To make it worse, the brick cleaner did a fantastic job when he came back to do the ground floor bricks, showing that it is eminently possible to clean light-coloured QLD bricks. Whoever did the top floor was clearly not paying attention or had never encountered Queensland bricks before, either way, we're not happy with how that turned out. Re: Can acid burn be completely removed? 3Feb 27, 2011 9:59 am When the brick cleaner cleaned the bricks Austral Zinc he stripped the colour from of the brick and you can see lines down the bricks (built with Simonds) along with acid burn etc, he has been back and cleaned again and cleaned some of it up but in doing so got acid on my painted charcole grey concrete which has now got splash marks and 1 yr on still has not been rectified even after several compliants. I keep getting brushed off about the bricks and the damage to them. I will have to persist as Its very noticable down the west side of the house. Not sure what else to do I am not a brick expert, but rendering would be 1 option, it would be costly to do the entire house though.... 2 6683 You can wash over existing pavers with 10% solution of water and hydrochloric acid, then wash off. The acid will provide for required bond key with new concrete. 1 36968 |