Removing Copper Sulphate stains from Tarmac!

[Millbert]

Good afternoon everyone,

 

We had a tonne bag of lawn sand split and go all over some tarmac yesterday.

 

Got the majority up and then pressure washed with hot water but the rust coloured stains still remain. The tarmac was damp when covered so it began to break down immediately!

 

Has anyone got any advice on products or methods to help remove,

 

Picture attached of the lovely pattern it has left!

 

Many thanks in advance,

 

Chris Mills

[Stubby]

I rather like that . If it were mine I would do the rest of the drive . Not helpful I know .

[Arborist]

Jack hammer!!

[eagleye]

try a weak acid on a small sample

[Millbert]

I rather like that . If it were mine I would do the rest of the drive . Not helpful I know .

 

 

Thanks stubby! It's unique!

[Haironyourchest]

Isn't lawn sand Iron Sulphate? Hence the rust coloured stain? An agri-store guy told me never use Iron Sulphate on tarmac to kill moss, because "You'll never get the stain out"

[Arborist]

What have your clients said about it? I knew of someone that laid an Indian sandstone patio and got mortar over the slabs whilst pointing so scrubbed it off with acid patio cleaner!

[Millbert]

Isn't lawn sand Iron Sulphate? Hence the rust coloured stain? An agri-store guy told me never use Iron Sulphate on tarmac to kill moss, because "You'll never get the stain out"

 

 

Apologies and thanks. Yes it's iron sulphate. Brain tired today!

[Stubby]

Apologies and thanks. Yes it's iron sulphate. Brain tired today!

 

Its the " you'll never get the stain out " bit that would worry me ........

[Millbert]

Its the " you'll never get the stain out " bit that would worry me ........

 

 

I know! Think my first wife used the same phrase about the curtains!