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gsw

  • Posts: 505
power washing wall stain, whats best??
« on: May 09, 2010, 08:53:42 pm »
I've been asked to remove this from a wall, i have done driveways in the past but nothing like this. Anyone with any experience whats the best chemical to use to remove the scale? and where can i get it?

cheers

Greg

cleewindows

Re: power washing wall stain, whats best??
« Reply #1 on: May 09, 2010, 10:33:07 pm »
the brickwork looks rough at the bottom i would try a chemical with wfp m8!

Andy Foster

  • Posts: 938
Re: power washing wall stain, whats best??
« Reply #2 on: May 09, 2010, 10:35:15 pm »
brick acid and cold pressure wash