[Smudger]

Got a decking clean coming up in 2 weeks but the customer also would like a large rust stain removed from a flint wall ( stain from central cheating flue )

Anyone reccomend a product/chemical that will remove the stain thanks in advance

Darran

[chris scott]

Lysergic acid diethylamide or Oxalic acid….cannot remember which one.  I have used both…..

[Smudger]

Cheers Chris - I see the  oxalic acid is an ingredient in bar keepers friend which is quite well thought of.

Darran

[Aqua Power Solutions]

Darren , Oxalic acid but do a test patch
Ed

[Smudger]

Okay Ed

[Tadgh O Shea]

Hi Darran, another option for rust is hydrofluoric acid 2 to 5% strength, or if you know any stainless steel fabricators near you they use a pickling paste for cleaning welds which is  produced  from hydrofluoric acid it usually comes in a 1 liter tub with applicator brush, just brush it onto the rust stain and let it dwell for 5 minutes agitate with a scrub brush and give the whole area a good rinse as its nasty stuff. Tadgh

[Kev Martin]

Miracle Heavy Duty Acidic Cleaner

http://www.tilinglogistics.co.uk/miracle-sealants-heavy-duty-acidic-cleaner-miracle-sealants-heavy-duty-acidic-cleaner?filter_name=Acidic%20cleaner

[Smudger]

Cheers guys!!

Darran