Keedle Posted January 23, 2011 Report Share Posted January 23, 2011 Apart from reharling how can I remove rust from harled wall caused by central heating exhaust ? (***Mod Edit - Moved to Consumer Advice & Resources***) Quote Link to comment Share on other sites More sharing options...
tins Posted January 23, 2011 Report Share Posted January 23, 2011 paint it Quote Link to comment Share on other sites More sharing options...
shetlandpeat Posted January 23, 2011 Report Share Posted January 23, 2011 Found this.... http://www.ultimatehandyman.co.uk/stain_removal/remove_rust_from_stone.htm Quote Link to comment Share on other sites More sharing options...
roadrunner Posted January 23, 2011 Report Share Posted January 23, 2011 Wash with Acid Wash 80. Garriok bros has it Quote Link to comment Share on other sites More sharing options...
Guest metallica man Posted January 23, 2011 Report Share Posted January 23, 2011 Wash with Acid Wash 80. Garriok bros has it+ 1 on that! Maybe a pressure wash first! Quote Link to comment Share on other sites More sharing options...
JohanofNess Posted January 24, 2011 Report Share Posted January 24, 2011 Wash with Acid Wash 80. Garriok bros has it +2 on that when I worked with a precast concrete company that was the very stuff we used to do on site tidy ups and agree with metallica man a pressure wash first helps but don't go too high on the pressure don't want to lose too many chips. Quote Link to comment Share on other sites More sharing options...
MaxFusion Posted January 24, 2011 Report Share Posted January 24, 2011 ^^ Use the Acid wash with care and make sure it's completely cleaned off as it will damage the plaster otherwise. Acid and cement react quite aggressively so don't be surprised when it starts fizzing I think there's a Chlorine based cleaner you could use but I forget the name... Quote Link to comment Share on other sites More sharing options...
Rubber Ducky Posted January 24, 2011 Report Share Posted January 24, 2011 hypochlorite from harbro, its an industrial bleach, might want to test on a small patch first as with all these products, especially the acid. Personally i wouldnt use the acid as it will penetrate the plaster. Quote Link to comment Share on other sites More sharing options...
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